Question

An element With atomic no-ll,
find the period and goroup write down its
electronic configuration explain
the nature
of compand from by
this element with one suitable
example and give proporties of this
​

Answer 1

$\huge\star\underbrace{\mathtt\red{«♠A} \mathtt\green{N♣ }\mathtt\blue{ §} \mathtt\purple{W}\mathtt\orange{£} \mathtt\pink{R♪»}}\star\:$

Atomic number 20 is of Calcium -

Electronic configuration – 1s2 2s2 2p6 3s2 3p6 4s2.

Group - It belongs to second group.

Period – It belongs to 4th period.

Valency – Valency of calcium is +2

Answer 2

Answer:

Atomic number 20 is of Calcium -

Electronic configuration – 1s2 2s2 2p6 3s2 3p6 4s2.

Group - It belongs to second group.

Period – It belongs to 4th period.

Valency – Valency of calcium is +2

Explanation:

hope it helps you