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  • 3 answers

Mahima Kaur 7 years, 5 months ago

Kg per m3

Alokitraj Sharma 7 years, 5 months ago

Kg per meter cube
kg/m3
  • 2 answers

Alisha Bhagat 7 years, 5 months ago

Yes it's deducted. Even we haven't done it. Syllabus of structure of atom starts from electromagnetic wave theory part

Nancy Rajput 7 years, 5 months ago

no
  • 1 answers

Sunila Sharma 7 years, 5 months ago

Simple formula that is used to derive molecular formula, it is calculated by the ratio of the no. Of moles of elements. Ratio of molar mass and empirical formula mass gives n, then multiply n and empirical formula, which gives molecular formula.
  • 4 answers

Parikshit Singh 7 years, 5 months ago

I think pradeep is good

Ishrat Khan 7 years, 5 months ago

ABC is easy to understand

Shivangi Vats 7 years, 5 months ago

Because in pradeep there are many que.

Shivangi Vats 7 years, 5 months ago

I think pradeep is better for chemistry
  • 1 answers

Alisha Bhagat 7 years, 5 months ago

Till Rutherford the spectra formed by atoms couldn't be explained. Bohr's model of hydrogen atom could explain the reason behind formation of spectra of single electron atom like hydrogen and hydrogen like particles but its one limitation was that it couldn't explain spectra of mutielectron atom.
  • 1 answers

Nancy Rajput 7 years, 5 months ago

Mole: One mole of a substance (atoms, molecules, ions, or particles) is that quantity in number having a mass equal to its atomic or molecular mass in grams. One mole of any substance contains 6.022 * 1023 particles (atoms, molecules, or ions), which is termed as avogadro number or avogadro constant.
  • 2 answers

Tanishka Gaur 7 years, 5 months ago

Limitations - he is enable to explain the zeeman effect and stark effect .no conclusion was given for the quantisation of angular momentum

Mr. Thakur 7 years, 5 months ago

You can find answer of this question in this app in revision notes of chapter2 of chemistry.
  • 2 answers

Deepika Tiwari 7 years, 5 months ago

I am saying about chemistry bro

Charu Vatsal 7 years, 5 months ago

What?
  • 6 answers

Aman Kumar 7 years, 5 months ago

But eska fayeda bhi hai..?
if they will provide camera.. then instead of posting answer people will post their pics. ?

Aman Kumar 7 years, 5 months ago

Khas, this app had the camera system....

Aman Kumar 7 years, 5 months ago

Hota hai, mere sath bhi hua tha ek bar
mehnet bekar ho gyi... but.. hope you will understand. ?
3BaCl2 + 2Na3PO4  -------------> Ba3(PO4)2 + 6Nacl                   0.5 mol           0.20 mol               x mol                        ⏩ ⏩     limiting reagent               0.5/3 = 1/6          0.2/2 = 1/10                             1/10 < 1/6               thus,  Na3PO4 is the limiting reagent.                Now, 1/10 = x/1                              x = 0.1 mol.
  • 3 answers

Aman Kumar 7 years, 6 months ago

Aufbau principle is the submission of 2 rules:- 1) Lowest sum rule:- That orbital will filled first for which the value of n will be minimum. E.g. 3d= n+l=3+2=5 4s=n+l= 4+0=4 2)If the value of (n+l)willbe same then that orbital will filled first which value of n will be minimum.. E.g. 3p=n+l=3+1=4 4s= n+l=4+0=4

Nancy Rajput 7 years, 6 months ago

Aufbau principle states that : In the ground state of the atoms, the orbital are filled in increasing order of their energies. i.e electrons first occupy the lowest energy orbital available to them and enter in the higher energy orbital only after the lower energy orbitals are filled. The order in which the electrons are filled is : 1s, 2s, 2p, 3s, 3p, 4s, 3d, 4p, 5s, 4d, 5p, 6s, 4f, 5d, 6p.. and so on
The aufbau principle states that in the ground state of an atom or ion, electrons fill atomic orbitals of the lowest available energy levelsbefore occupying higher levels.
  • 1 answers
Crystallization is a technique used for the purification of substances. A separation technique to separate solids from a solution.
  • 1 answers
it is of 6th class yarr anyway.. your answer is : The process used to separate slightly large particle from a mixture by hand is called handpicking...
  • 4 answers

Srashti Katre 7 years, 5 months ago

Stream of negatively charged particle

Nikhil Goyal 7 years, 6 months ago

Cathode rays is negatively charged.

Aman Kumar 7 years, 6 months ago

And second, in simple word cathode rays are the negatively charged particle

Aman Kumar 7 years, 6 months ago

First of all it is cathode rays
  • 1 answers
composition can be defined as the arrangement, ratio, and type of atoms in molecules of chemical substances.
  • 1 answers
latent heat of fussion is defined as the amount of heat energy required to change 1kg of solid into liquid at atmospheric pressure without any change in temp. at it's melting point..
  • 2 answers

Mr. Thakur 7 years, 6 months ago

For learning and reading N.C.E.R.T Textbook ; N.C.E.R.T Examplar and For Practice Pradeep chemistry
Ncert and pradeep.. are best
  • 7 answers

Harsh Singh 7 years, 6 months ago

Nutan physics book is very best for self study, this book language is very simple.

Renu Yadav 7 years, 6 months ago

Modern abc of chemistry is the best because it has different types of questions and it is helpful for competitive exam also

Tapan Pandey 7 years, 6 months ago

Modern abc for chemistry and rd Sharma for mathematics

M Afisha 7 years, 6 months ago

Also fr maths

M Afisha 7 years, 6 months ago

I mean guide..

Anmol Yadav 7 years, 6 months ago

Modern publication

Anmol Yadav 7 years, 6 months ago

NCERT
  • 3 answers

Tapan Pandey 7 years, 6 months ago

Modern abc

Anmol Yadav 7 years, 6 months ago

KC Verma

Anmol Yadav 7 years, 6 months ago

Arihant
  • 2 answers

Maitry Rajpoot 7 years, 5 months ago

Wavelenght = 400×10^-9m C= 3×10^8 Energy = hc/lemda 6.6×10^-34 × 3×10^8 / 400×10^-9 =49.695×10^-19 No of protons emitted = 100/49.695×10^-19 = 2.012×10^20s

Aditya Sinha 7 years, 6 months ago

Formula of no. of photons emiited:- Energy=hc/lamda.And energy=power×time.This way you can easily find out to no. of photon emitted.
  • 1 answers

Yash Thakur 7 years, 6 months ago

Yaah!
  • 6 answers

Anmol Yadav 7 years, 5 months ago

Lkin ye baat prove ho chuki h k electon circular nhi elliptical path pr rotate krte h....my question is...how we get to know k electron circular path m rotate krte h

Tapan Pandey 7 years, 6 months ago

Centrifugal force and nuclear force both were acting on electron from opposite side so, the resultant force balance therefore, the electrons revolve in circular path

Anmol Yadav 7 years, 6 months ago

Satisfactory answer nhi mila mujhe whan bhi

Aman Kumar 7 years, 6 months ago

Then u can search in google...there u can get a variety of reasons..

Anmol Yadav 7 years, 6 months ago

Mujhe smj nhi aaya

Aman Kumar 7 years, 6 months ago

I m not totally sure but I think that the distance b/w electron and nucleus when electron is revolving is same which shows that it is circular...

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