Chemistry 1st Paper MCQ-Barishal Board-2021

Electron affinity

Ionization energy

Electro Positivity

Electro Negativity

$1.659 \times 10^{-4}$

$1.975 \times 10^{6}$

$1.567 \times 10^{-6}$

$1.795 \times 10^{-4}$

Principal quantum number

Subsidiary quantum number

Magnetic quantum number

Spin quantum number

$1.6 \times 10^{-20}$

$1.6 \times 10^{-19}$

$4.8 \times 10^{-10}$

$4.8 \times 10^{-9}$

3s

4s

3d

4p