Atomic Structure

Atomic Structure

Electronic configuration of sodium

The electronic configuration of sodium is 1s² 2s² 2p⁶ 3s¹ (or) [Ne]3s1. Which indicates that sodium has 11 electrons distributed in its atomic orbitals.

Elsectrons present in the M-shell of an element with atomic number 24

13

An atom with atomic number 12 and mass number 26 comtains

12 Protons, 12 Electrons and 14Neutrons

Mg+2 and Al+3 have identical

Electronic configuration

The four quantom numbers of valence electron of pottasium are

4, 0, 0, +1/2

The number of ‘P’ electrons in Al atom is

7

Chemical stability of an element is due to

Ns2 Np6

Angural momentum of an electron is an integral multiple of

h/2π

Neutron was discovered by

James Chadwick in 1932

Proton was discovered by

Ernest Rutherford in 1917

Electron was discovered by

J.J. Thomsan in 1897