Question

please answer this question, correct answer only​

Answer 1

Answer:

EC depends on atomic number so you don't need atomic mass for writing EC

EC = 1s² 2s² 2p⁴

thanks ..

let me tell you a trick to learn it

just write 1,2,2,3,3,3 without exception ofcourse

and fill the electron in orbitals like s can get 2 , p can get 6 like that .. it will be enough till 10th class

Answer 2

Answer:

first shell 2 electron

second shell 6 electron