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    • Posted by Mr.Gopal Singh 6 years, 4 months ago

    CBSE > Class 11 > Chemistry
    • 0 answers
    ANSWER

    • Posted by Salim Salim 6 years, 4 months ago

    CBSE > Class 11 > Chemistry
    • 0 answers
    ANSWER

    • Posted by Anjali Malik 6 years, 4 months ago

    CBSE > Class 11 > Chemistry
    • 2 answers

    Sia ? 6 years, 4 months ago

    Covalency is the number of electrons an element shares.

    2Thank You

    Mehak Gautam 6 years, 4 months ago

    Firstly , draw the Lewis structure of the molecule and then count the number of shared pairs of elecrons . Hence, by counting the number of bonds formed by the element you can calculate the covalency of that element .

    0Thank You

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    • Posted by Devansh Tomar 6 years, 4 months ago

    CBSE > Class 11 > Chemistry
    • 2 answers

    Drishti Arora 6 years, 4 months ago

    In which q=0,i.e., there is no exchange of heat..

    0Thank You

    Aditya Narayan Singh 6 years, 4 months ago

    dq=0

    0Thank You

    ANSWER

    • Posted by Kuldeep Saravat 6 years, 4 months ago

    CBSE > Class 11 > Chemistry
    • 1 answers

    Yogita Ingle 6 years, 4 months ago

    The oxidation state of each oxygen atom is -1/2 since it is a superoxide ion.
    Let the oxidation state of K be x.
    x + 2(-1/2) = 0
    2x-2 = 0
    2x=2
    x=+1
    hence, oxidation state of k is +1

    2Thank You

    ANSWER

    • Posted by Abhinav Goyal 6 years, 4 months ago

    CBSE > Class 11 > Chemistry
    • 1 answers

    Amisha Meena 6 years, 4 months ago

    R is universal gas constant R=8.314joule per kg per mole

    1Thank You

    ANSWER

    • Posted by Uwaish Gujjar 6 years, 4 months ago

    CBSE > Class 11 > Chemistry
    • 0 answers
    ANSWER

    • Posted by Shahid Makandar 6 years, 4 months ago

    CBSE > Class 11 > Chemistry
    • 2 answers

    Gaurav Seth 6 years, 4 months ago

    nswer:

    A sample of pure water,whatever the source always contains 88.8% by mass of oxygen & 11.1%by mass of hydrogen.

    The total amount of percentage is 100, therefore they are divided in a constant ratio.

    H2O contains H and O in a fixed ratio by mass. It illustrates the law of constant composition or in other words law of conservation of energy. So, they are divided in a ratio of 1:8 therefore mass of Oxygen is 88.8%.

    0Thank You

    Shahid Makandar 6 years, 4 months ago

    16

    0Thank You

    ANSWER

    • Posted by Dharmendra Solanki 6 years, 4 months ago

    CBSE > Class 11 > Chemistry
    • 2 answers

    Shubham Kumar 6 years, 4 months ago

    Compound havind same molecular formula but different structural formula is called isotopes

    0Thank You

    Om Dhale 6 years, 4 months ago

    Element having same no. Of proton but different no.of newtron are known as isotopes.. Or Isotopes are atoms af same element which have same atomic number but different atomic mass no.

    1Thank You

    ANSWER

    • Posted by Anup Singh Baghel 6 years, 4 months ago

    CBSE > Class 11 > Chemistry
    • 0 answers
    ANSWER

    • Posted by Milon Roy 6 years, 4 months ago

    CBSE > Class 11 > Chemistry
    • 0 answers
    ANSWER

    • Posted by A A 6 years, 4 months ago

    CBSE > Class 11 > Chemistry
    • 1 answers

    Jassi Midha 6 years, 4 months ago

    Hi

    0Thank You

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    • Posted by Stuti Agrawal 6 years, 4 months ago

    CBSE > Class 11 > Chemistry
    • 1 answers

    Yogita Ingle 6 years, 4 months ago

    Stoichiometric Calculations are mostly based on chemical formulas.

    1. Formula Mass: It is defined as the sum of the atomic weights of the each atom present in the molecule of the substance. For example formula mass of Na2S is calculated as 2(23) + 1(32) = 78
    2. Avogadro number: Avogadro’s number is defined as the number of particles present in one mole of substance. It is defined as a number of atoms present in exactly 12g of C-12.Avogadro number is valued as 022× 1023 
    3. Molar Mass: It is defined as the sum of the total mass of all the atoms that make up a molecule per mole.

    0Thank You

    ANSWER

    • Posted by Rajat Gangwar 6 years, 4 months ago

    CBSE > Class 11 > Chemistry
    • 0 answers
    ANSWER

    • Posted by Varun Singh Kushwah 6 years, 4 months ago

    CBSE > Class 11 > Chemistry
    • 1 answers

    Bhawna Sangwan 6 years, 4 months ago

    ZnO + H2O +SO2

    1Thank You

    ANSWER

    • Posted by Himani Upadhayay 6 years, 4 months ago

    CBSE > Class 11 > Chemistry
    • 0 answers
    ANSWER

    • Posted by Aditya Vishwakarma 6 years, 4 months ago

    CBSE > Class 11 > Chemistry
    • 1 answers

    Mehak Gautam 6 years, 4 months ago

    A group of numerical values which provide solutions that are acceptable by the Schrodinger wave equation for hydrogen atoms. For example , ncert physics book pg no. - 53 problem 2.17 and 2.18 .

    2Thank You

    ANSWER

    • Posted by Kailas Borse 6 years, 4 months ago

    CBSE > Class 11 > Chemistry
    • 0 answers
    ANSWER

    • Posted by Kailas Borse 6 years, 4 months ago

    CBSE > Class 11 > Chemistry
    • 1 answers

    Gautam Prajapati 6 years, 4 months ago

    I think question complete nahi....pura question To type karo.....

    0Thank You

    ANSWER

    • Posted by Shivani Nag 6 years, 4 months ago

    CBSE > Class 11 > Chemistry
    • 3 answers

    Yogita Ingle 6 years, 4 months ago

    • Dispersion forcesor London forces refers to the attractive forces existing between the two temporary It was first proposed by a Germanphysicist Fritz London.
    • These forces are always attractive.

    0Thank You

    Shivani Nag 6 years, 4 months ago

    Lodan dispersion

    2Thank You

    Shivani Nag 6 years, 4 months ago

    Write the short note london dispersion force with a suitable diagram

    1Thank You

    ANSWER

    • Posted by Anshul Jaiswal 6 years, 4 months ago

    CBSE > Class 11 > Chemistry
    • 1 answers

    Abdul Kadir 6 years, 4 months ago

    Molarity or molality

    1Thank You

    ANSWER

    • Posted by Siddhi Kushwaha 6 years, 4 months ago

    CBSE > Class 11 > Chemistry
    • 1 answers

    Mehak Gautam 6 years, 4 months ago

    larger the difference in electronegativities of bonded atoms, larger the dipole moment. As a example, NaCl has the highest dipole moment because it has an ionic bond.

    0Thank You

    ANSWER

    • Posted by Shalu Singh 6 years, 4 months ago

    CBSE > Class 11 > Chemistry
    • 2 answers

    Rahul Raj 6 years, 4 months ago

    The heisenberg's principle says that it is impossible to determine at any given instant, simulteneously both the position and momentum of subatomic particles like electrons with accuracy/certainity.

    4Thank You

    Raman Gupta 6 years, 4 months ago

    According to hisenberg's principle it is impossible to know the position and momentum of atom simultaneously.

    2Thank You

    ANSWER

    • Posted by Kuldeep Raj 6 years, 4 months ago

    CBSE > Class 11 > Chemistry
    • 0 answers
    ANSWER

    • Posted by Swagatika Das 6 years, 4 months ago

    CBSE > Class 11 > Chemistry
    • 2 answers

    L . 6 years, 4 months ago

    Donot go on directly the defination . see, electron is so small and if we want to get image of it we need light of wave length which is smaller than diameter of electron. so, light will have higher energy when it strikes electron and we will get the place where electron was but it will change velocity. When velocity changes momentum changes so heisenberg says that we cannot caculate velocity and momentum together

    2Thank You

    Gautam Prajapati 6 years, 4 months ago

    It states that it is impossible to determine simultaneously, the exact position and exact momentum ( or velocity) of an electone (with accuracy) mathematically.

    2Thank You

    ANSWER

    • Posted by Ravi Bokadiya 6 years, 4 months ago

    CBSE > Class 11 > Chemistry
    • 2 answers

    Ayush Vishwakarma?? 6 years, 4 months ago

    Polar covalent bond is a bond in which the different element of an atom is present and sharing of electron but in nonpolar covalent bond the same type of element of an atom is present and mutual sharing of electrons like NH4, CH4 and in polar example like NaCl H2 s o4 etc

    1Thank You

    Punarbasu Das 6 years, 4 months ago

    Check on ncert

    1Thank You

    ANSWER

    • Posted by Divyansh Verma 6 years, 4 months ago

    CBSE > Class 11 > Chemistry
    • 4 answers

    Rahul Raj 6 years, 4 months ago

    Another drawback... it says nothing about electronic structure of atom

    0Thank You

    Rahul Raj 6 years, 4 months ago

    Major drawback.....according to rutherford's atomic model, electrons move at very high speed around nucleus. Btt according to electromagnetic theory of maxwell , if a charge particle undergoes accln , it emits radiation continiously. Applying this theory, calculation shows it will take only 10^-8 seconds to fall the electron on to the nucleus taking a spiral path which does not happen. In simple words u can say he didn't explain the stability of an atom .

    1Thank You

    Ayush Vishwakarma?? 6 years, 4 months ago

    He does not give the max planck Quantum theory

    0Thank You

    Gautam Prajapati 6 years, 4 months ago

    1. He could not able to explain the stability of an atom. 2. He could not explain the line spectrum of hydrogen atom.

    2Thank You

    ANSWER

    • Posted by Ravi Bokadiya 6 years, 4 months ago

    CBSE > Class 11 > Chemistry
    • 2 answers

    Mehak Gautam 6 years, 4 months ago

    According to Valence bond theory , covalent bond formation between the atoms when they have half-filled valence atomic orbitals, each containing a single unpaired electron.

    5Thank You

    Ayush Vishwakarma?? 6 years, 4 months ago

    By this theory a covalent bond is formed between two atom by the overlapping of half filled valence atomic orbital..

    4Thank You

    ANSWER

    • Posted by Rabindra Kumar Das 6 years, 4 months ago

    CBSE > Class 11 > Chemistry
    • 1 answers

    Pranshu Baghel 6 years, 4 months ago

    Co2=molecular mass =12+16x2=44g No of molecule =44x6.022x10²³=264.968x10²³ Scientific notation =2.64x10²³+²

    1Thank You

    ANSWER

    • Posted by #Aditi~ Angel???? 6 years, 4 months ago

    CBSE > Class 11 > Chemistry
    • 16 answers

    Ayush Vishwakarma?? 6 years, 4 months ago

    Kaha ho aditi plzzzzz thumhe mera kasam plzz aao naaaaaaaaa plzzzz sister

    1Thank You

    Ayush Vishwakarma?? 6 years, 4 months ago

    Kaha ho plzzzzzz aaoo naaaaaa

    1Thank You

    Ayush Vishwakarma?? 6 years, 4 months ago

    Kaha ho aditi plzzzz aao jao naaaaaaaaa plzzzzzzzzzz

    1Thank You

    Ayush Vishwakarma?? 6 years, 4 months ago

    One of alpha rays come back in 20,000 rays

    3Thank You

    Ayush Vishwakarma?? 6 years, 4 months ago

    Most of alpha particle follow linea direction..

    2Thank You

    Ayush Vishwakarma?? 6 years, 4 months ago

    Okkkkkkkkk

    1Thank You

    #Aditi~ Angel???? 6 years, 4 months ago

    Nooo...

    2Thank You

    Ayush Vishwakarma?? 6 years, 4 months ago

    Obey kya re kya kr rhe ho anhh samajh me ni aata hai

    1Thank You

    #Aditi~ Angel???? 6 years, 4 months ago

    I Don't know...plzz & harsh from yesterday u r Commenting on my every comment plzz stop

    2Thank You

    Harsh Mishra 6 years, 4 months ago

    Aditi ~ Angel

    I'm Fine but not fully

    Nobody in this world is fully fine.........miss, so how could you be differ.......

    1Thank You

    Ayush Vishwakarma?? 6 years, 4 months ago

    Kb tak thik ho gaogi tum....

    1Thank You

    #Aditi~ Angel???? 6 years, 4 months ago

    I'm Fine but not fully

    3Thank You

    #Aditi~ Angel???? 6 years, 4 months ago

    Thanks Brother ?

    2Thank You

    Ayush Vishwakarma?? 6 years, 4 months ago

    In this experiment Rutherford used the radioactive element that element is radium and the radioactive element radium put in lead box

    1Thank You

    Ayush Vishwakarma?? 6 years, 4 months ago

    Kaise ho sister

    1Thank You

    Ayush Vishwakarma?? 6 years, 4 months ago

    Two detailed study about the structure of an atom Rutherford carried out an experiment by the passing of alpha rays on very thin gold foil and give atomic model which was called Rutherford atomic model

    3Thank You

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