Question

1.An element A is placed in group 1 and period 3 of periodic table with reference to
elements answer the following questions:
a)Identify the element 'A'​

Answer 1

Answer:

Na(sodium)

atomic no:- 11

Answer 2

Answer:

sodium (Na)

Explanation:

Group 1 Elements

H hydrogen

Li lithium

Na Sodium it belongs in group 3

$3 {s}^{1}$

K potassium

Rb Rubidium

Cs Cesium

Fr Francium