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How heat is path function

Posted by Abhishek Gupta 6 years, 4 months ago

CBSE > Class 11 > Chemistry

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How heat is path function?

Posted by Abhishek Gupta 6 years, 4 months ago

CBSE > Class 11 > Chemistry

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Explain why Inoization Energy of 'Br' is more than that of 'B' (3 marks)

Posted by Mridul Singh 6 years, 4 months ago

CBSE > Class 11 > Chemistry

2 answers

Sia ? 6 years, 4 months ago

Comparing the first ionization energy (IE1) of beryllium, Be, and boron, B: (a) Be has a higher IE1 because its radius is smaller. (b) B has a higher IE1 because its radius is smaller. (c) Be has a higher IE1 because its s sub-shell is full.

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Amisha Meena 6 years, 4 months ago

Because Br is more stable than b

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Explain why Inoization Energy of 'Mg' is more than that of 'Na,Al'

Posted by Mridul Singh 6 years, 4 months ago

CBSE > Class 11 > Chemistry

1 answers

Sia ? 6 years, 4 months ago

The valence electron of aluminum is in 3p subshell which is farther than 3s electron from the nucleus. Therefore, it is easy to remove this electron. Thus Ionization Energy of 'Mg' is more than that of 'Na,Al'

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balancing methods

Posted by Sapna Tak 6 years, 4 months ago

CBSE > Class 11 > Chemistry

1 answers

Palak Gambhir 6 years, 4 months ago

1)Hit and trial methods.... 2) Partial equation method.... 3) Oxidation number method.... 4) Ion exchange method....

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The elements z=117 and 120 have not yet been discovered. In which family or group would you place this elements and also give electronic configuration in each case

Posted by Avinash Prasad 6 years, 4 months ago

CBSE > Class 11 > Chemistry

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Write the IUPAC name and symbol for the element having atomic number 105

Posted by Sachin Kumar 6 years, 4 months ago

CBSE > Class 11 > Chemistry

2 answers

Tanashri Wagh 6 years, 4 months ago

UNNILPENTIUM

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Ayush Vishwakarma?? 6 years, 4 months ago

The IUPAC name of element having atomic number 105 is (UNNILPENTIUM) and symbol is UnP.

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what is atomic models

Posted by Raj Singh 6 years, 4 months ago

CBSE > Class 11 > Chemistry

2 answers

Robinpreet Kaur 6 years, 4 months ago

Good answer Ayush

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Ayush Vishwakarma?? 6 years, 4 months ago

Atomic model is a model of an atom which shows the character of its nature..

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Calculate the wave number and frequency of yellow light having wavelength 5000A.

Posted by Mohandas Gowda 6 years, 4 months ago

CBSE > Class 11 > Chemistry

1 answers

Yogita Ingle 6 years, 4 months ago

Frequency = c/ Wavelength = (3 x10⁸)/5000 = 0.06x 10⁵
Wave number =Frequency/c = (0.06x 10⁵)/(3 x10⁸)= 0.18x 10^-3

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Why is it not possible to cool a gas to 0 k ?

Posted by Monika Rani 6 years, 4 months ago

CBSE > Class 11 > Chemistry

1 answers

Rahul Chandel 6 years, 4 months ago

Because 0k is equal to the 273c

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What is kolbe reactions

Posted by Annu Singh 6 years, 4 months ago

CBSE > Class 11 > Chemistry

1 answers

Yogita Ingle 6 years, 4 months ago

Kolbe’s reaction: When phenol is treated with sodium hydroxide, sodium phenoxide is produced. This sodium phenoxide when treated with carbon dioxide, followed by acidification, undergoes electrophilic substitution to give ortho-hydroxybenzoic acid as the main product. This reaction is known as Kolbe’s reaction.

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If the ionisation energy of hydrogen atom is 13.6ev the energy required to excite it from the ground state to the next higher state is approximately

Posted by Mahesh Kumar 6 years, 4 months ago

CBSE > Class 11 > Chemistry

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Why did Heisenberg replace the concept of definite orbit by the concept of probabilty

Posted by Nitin Singh 6 years, 4 months ago

CBSE > Class 11 > Chemistry

2 answers

Varsha Bhati 6 years, 4 months ago

Because if we have definite orbit then we can find out momentum and position of an moving electron simultaneously but he proved experimentally that it is impossible to find out both position and momentum simultaneously

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Ayush Patel 6 years, 4 months ago

Because I don't know

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Thanks for helping in my problems Happy friendship day to all

Posted by Sanjana Gupta 6 years, 4 months ago

CBSE > Class 11 > Chemistry

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The mass of 500cc hydrogen at 760 mm of HG and 300 k was found to be 0.0 409 gram calculate calculate the molecular mass of hydrogen

Posted by Kshitij Thakur 6 years, 4 months ago

CBSE > Class 11 > Chemistry

2 answers

Shivang Bhatia 6 years, 4 months ago

molecular mass of hydrogen will be 2

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Divyansh Kumar 6 years, 4 months ago

Woooo that looks pretty tricky...

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Justify that the following reaction is redox reaction 4BCl3 +3LiAlH4 -----------> 2B2H6 +3LiCl +3AlCl3.

Posted by Anant Tripathi 6 years, 4 months ago

CBSE > Class 11 > Chemistry

1 answers

Jatin Garg???? 6 years, 4 months ago

Bro this reaction has no atom of Oxygen.

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What is quarks

Posted by Nikhil Negi 6 years, 4 months ago

CBSE > Class 11 > Chemistry

1 answers

Salena Karir 6 years, 4 months ago

A quark is a type of elementary particle and a fundamental consitutent of matter quarks combine to form composite particles called hadrons,the most stable of which are protons and neutrons,the component of atomic nuclic. SPIN_1/2 COMPOSITION_ elementary particle

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Electroconifergution

Posted by Mahesh Suthar I 6 years, 4 months ago

CBSE > Class 11 > Chemistry

1 answers

Robinpreet Kaur 6 years, 4 months ago

Name the element then i send u electroniconfiguration of it.... OK Mahesh

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Diffrence between sigma bond and pi bond.

Posted by Kushal ?? 6 years, 4 months ago

CBSE > Class 11 > Chemistry

4 answers

Arockiaraj Chinnappan 6 years, 4 months ago

Sigma bond is single bond n pi bond is double bond.

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Jatin Garg???? 6 years, 4 months ago

Sigma bond is formed by axial overlapping while pi bond is formed by side to side overlapping of two orbitals

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Nikhil Negi 6 years, 4 months ago

Pi bond is weak bond

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Nikhil Negi 6 years, 4 months ago

Sigma bond is strong bond

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What is hybridization and its types?

Posted by Team07 Fanclub 6 years, 4 months ago

CBSE > Class 11 > Chemistry

1 answers

Arockiaraj Chinnappan 6 years, 4 months ago

Hybridization happens when atomic orbitals mix to form a new atomic orbital. The 3 types r sp3 single bond, sp2 double bond and sp triple bond.

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Posted by Sarvesh Kumar 6 years, 4 months ago

CBSE > Class 11 > Chemistry

4 answers

Sanjana Gupta 6 years, 4 months ago

S for sanjana??

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Shubham Joshi 6 years, 4 months ago

Kya hai bhai s for

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Unnati Pragya 6 years, 4 months ago

S what ?. ??

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Palak Gambhir 6 years, 4 months ago

......?

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How the atomic radii changes across the period?

Posted by Akhilesh Yadav 6 years, 4 months ago

CBSE > Class 11 > Chemistry

3 answers

Prashant Kumar 6 years, 4 months ago

Increase in Nuclear charge and decrease in atomic size.......both are inversely proportional

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Abhay Verma 6 years, 4 months ago

The atomic radii decreases because when we move from left to right in a period the no. of electron increases and charge of proton also increase then the proton charge also attract the valence electron then that lead to the decrease in atomic radii.??????

1Thank You

Jaswant Sain 6 years, 4 months ago

because when we move left to right then size of atom decrease due increase in atomic nuclear charge and no. of electron on orbit

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Hey buddy Can u explain me formal charge?

Posted by Jheel Tippan 6 years, 4 months ago

CBSE > Class 11 > Chemistry

1 answers

Varsha Bhati 6 years, 4 months ago

It denotes the difference in valence electrons in free atom and number of electrons assigned to that atom in lewis dot structure No of valence electrons in free atom - number of bonding electrons - half of no. of bonding electrons

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What is plank quantum theory

Posted by Milan Rajput 6 years, 4 months ago

CBSE > Class 11 > Chemistry

2 answers

Ankita Samota 6 years, 4 months ago

According to plank energy trevels in the form of small packets called quanta. In case of light these quantas are known as photon and the energy of each quanta is directly proportional to the frequency of radiation. E is proportional to V E = h new Where h is plank constant which is 6.62×10*-34 JS

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Vk 2 6 years, 4 months ago

-34 6.626*(10)

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What is a instantaneous dipolar molecule.

Posted by Jatin Garg???? 6 years, 5 months ago

CBSE > Class 11 > Chemistry

1 answers

Sia ? 6 years, 5 months ago

They are dipoles that only last for an instant and then they are gone. They are caused by the shaking and bending of molecules where every now and then, the electrons are located off to one side a bit, which makes for a dipole to exist.

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Characteristics of groups and period in periodic table

Posted by Yash Kumar 6 years, 5 months ago

CBSE > Class 11 > Chemistry