An element having atomic number 120 have not yet been discovered.… - Vidyadip

MCQ

An element having atomic number $120$ have not yet been discovered. What will be its its position in long form fo periodic table ?

A
$2^{nd}$ group and $7^{th}$ period
✓
$2^{nd}$ group and $8^{th}$ period
C
$3^{nd}$ group and $6^{th}$ period
D
$3^{nd}$ group and $7^{th}$ period

✓

Answer

Correct option: B.

$2^{nd}$ group and $8^{th}$ period

b
$120 = [U_{40}]\, 8s^2$
Therefore it can be placed in 8th period and $2^{nd}$ group.

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