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What is dipole movement?

Posted by Priyanka Sharma 8 years, 3 months ago

1 answers

Amar Kumar 8 years, 3 months ago

A dipole moment is a measurement of the separation of two opposite electrical charges. Dipole moments are a vector quantity.Dipole moment ( μ ) is the measure of net molecular polarity, which is the magnitude of the charge Q at either end of the molecular dipole times the distance r between the charges.

μ=Q×r

Dipole moments tell us about the charge separation in a molecule. The larger the difference in electro negativities of bonded atoms, the larger the dipole moment.

For example, NaCl has the highest dipole moment because it has an ionic bond (i.e. highest charge separation).

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What use of chemistry in our daily life?

Posted by Pintu Kumar 8 years, 3 months ago

CBSE > Class 11 > Chemistry

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What is shielding effect?

Posted by Mukesh Singh Rana 8 years, 3 months ago

CBSE > Class 11 > Chemistry

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What values are shown by mendeleev

Posted by Pooja Chaturvedi 8 years, 3 months ago

CBSE > Class 11 > Chemistry

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What is the value of Ryberg constant

Posted by Yashasewi Singh 8 years, 3 months ago

CBSE > Class 11 > Chemistry

1 answers

Rahul Poddar 8 years, 3 months ago

1.09677×10^7m

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Oxidant

Posted by Ajay Meghwal 8 years, 3 months ago

CBSE > Class 11 > Chemistry

1 answers

Himanshi Verma 8 years, 3 months ago

These are the substances which supplies oxygen or electronegative elements and remove hydrogen or electopositive elements are known as oxidising agent or oxidant. Ex. Mg + O2 -----> Mgo O2 is an oxidising agent . Mgo is oxidised .

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Sir in ncert ch- 5 . In question no. 6

Posted by Yash Soni 8 years, 3 months ago

CBSE > Class 11 > Chemistry

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Calculate the weight of carbon monoxide having the same number of oxygen atoms as are present in 22gmail of carbon dioxide.

Posted by Priyanka Sharma 8 years, 3 months ago

CBSE > Class 11 > Chemistry

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Give reason for extra stability of half filled or fully filled orbital

Posted by Priyanka Sharma 8 years, 3 months ago

CBSE > Class 11 > Chemistry

1 answers

Rahul Poddar 8 years, 3 months ago

In half filled or full filled orbital electrons can change their magnetic quantum number, change in magnetic quantum number cause less energy among orbital which cause more stability (less energy more stability) that's why half filled or full filled are extra stable

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mandleve atomic theory

Posted by Manish Singh 8 years, 3 months ago

CBSE > Class 11 > Chemistry

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Explain MOT

Posted by Manish Singh 8 years, 3 months ago

CBSE > Class 11 > Chemistry

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Reciprocal proportion

Posted by Sandip Yadav 8 years, 3 months ago

CBSE > Class 11 > Chemistry

2 answers

Himanshi Verma 8 years, 3 months ago

Ratio of element A and B combined with third element C is either same or multiple of whole number ratio of the element A and B .

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Himanshi Verma 8 years, 3 months ago

Ratio of element A and B combined withthitd element

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Atomic mass of potassium?

Posted by Deepanshu Chauhan 8 years, 3 months ago

CBSE > Class 11 > Chemistry

1 answers

Naveen Katiyar 8 years, 3 months ago

40 is atomic mass of (K)19 atomic number

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How many electrons are there in NO3-

Posted by Anmol Baranwal 8 years, 3 months ago

CBSE > Class 11 > Chemistry

4 answers

Taniya Kajal 8 years, 3 months ago

32 electrons

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Isha Deo 8 years, 3 months ago

32 electrons and 24 valance electrons

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Tanvi Dwivedi 8 years, 3 months ago

26 electron

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Somesh Tyagi 8 years, 3 months ago

12 electrons

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1gm metal carbonate on heating gives 0.56gm metal oxide.Find equivalent weight of metal.

Posted by Ajay Lodhi 8 years, 3 months ago

CBSE > Class 11 > Chemistry

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What is the difference between inoinzatiom energy and binding energy nd excitaion energy

Posted by Tripty Agrawal 8 years, 3 months ago

CBSE > Class 11 > Chemistry

1 answers

Sia ? 4 years, 6 months ago

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The most powerful oxidising agent among the following (a) iodine (b) fluorine(c) chlorine (d) bromine

Posted by Deepshikha Yadav 8 years, 3 months ago

CBSE > Class 11 > Chemistry

1 answers

Tanvi Dwivedi 8 years, 3 months ago

Fluorine

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Brogile's de law

Posted by Anmol Chawla 8 years, 3 months ago

CBSE > Class 11 > Chemistry

1 answers

Himanshi Verma 8 years, 3 months ago

All moving particle (macroscopic and microscopic) have particle nature as well as wave nature . WAVELENGTH (lamda)=h/p Where p is planks constant This shows that wave character is inversely proportational to particle character .

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Each and every teacher says that carbon is present in everything but tha water is the mixture of hydrogen and oxygen and carbon is not present? WHY?

Posted by Suhail Khan 8 years, 3 months ago

CBSE > Class 11 > Chemistry

2 answers

Yogesh Rupireddy 8 years, 3 months ago

As water is inorganic carbon is absent and it is also not a living thing

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Yogesh Rupireddy 8 years, 3 months ago

Carbon is present in all organic compounds not in inorganic compounds and it is also preSent in all living things

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If the density of methanol is 0.739 kg/L what is its volume for making 2.5L of its 0.25 molar solution.

Posted by Prathmesh Nawale 8 years, 3 months ago

CBSE > Class 11 > Chemistry

1 answers

Deepshikha Yadav 8 years, 3 months ago

Let mass of methanol is xg. Then 0.25M=x/80 x=20g Now, Density=mass/volume .739=20/1000v V=0.02l

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What would have happened if Rutherford has taken thin foil of aluminium at the place of thick gold foil

Posted by Aayush Shekhar 8 years, 3 months ago

CBSE > Class 11 > Chemistry

1 answers

Neeraj Mangal 8 years, 3 months ago

Then ejection of electron does not take place which was inconvenient for his experiment

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Chemistry

Posted by Aayush Shekhar 8 years, 3 months ago

CBSE > Class 11 > Chemistry

1 answers

Arnav Singh 8 years, 3 months ago

Science of atoms and molecules

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Ncrt answer

Posted by Nikhil Satwane 8 years, 3 months ago

CBSE > Class 11 > Chemistry

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What is thermal energy?

Posted by Sunny Dedha 8 years, 3 months ago

CBSE > Class 11 > Chemistry

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Which bond is more polar in B-Cl , N-Cl , C-F , C-Cl and why ?

Posted by Anil Shrivastava 8 years, 3 months ago

CBSE > Class 11 > Chemistry

1 answers

Nikhil Satwane 8 years, 3 months ago

Ncrt answer

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Please tell me hybridisation

Posted by Aman Kumar 8 years, 3 months ago

CBSE > Class 11 > Chemistry

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If a and b denotes de- Broglie wavelength of two particles with same masses but charges in the ratio of 1:2 after they are accelerated from rest through the same potential difference then show that a greater than b

Posted by Diwas Sarraf 8 years, 3 months ago

CBSE > Class 11 > Chemistry

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The pH of a solution obtained by mixing 100ml of .2M ch3cooh with100 ml of .2 Naoh would be

Posted by Shweta Singh 8 years, 3 months ago

CBSE > Class 11 > Chemistry

0 answers

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Ionization energy

Posted by Sandip Yadav 8 years, 3 months ago

CBSE > Class 11 > Chemistry

1 answers

Mansi Shrivastava 8 years, 3 months ago

The amount of energy required to remove electron from isolated state in ground state.

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Why the electronic configuration of chromium is exception

Posted by Shubham Singh 8 years, 3 months ago

CBSE > Class 11 > Chemistry

2 answers

Anjali Garg 8 years, 3 months ago

1s2 2s2 2p6 3s2 3p6 3d5 4s1 because as we know half feild and full feild configration are more stable configration to sable the chromium thats why its configration is diffrent

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Vijay Arora 8 years, 3 months ago

1s2 2s2 2p6 3s2 3p6 4s1 3d5

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