Question

The atomic number of an element ‘X’ is 13 and its mass number is 27. Answer the following questions based on the element.

a) Write the electronic configuration

b) Locate the group and period of the element in the periodic table.

c) Identify its nature and valency.​

Answer 1

Answer:

a) Electronic configuration is 2,8,3

b) It's in group 13 and 3rd period

c) it's is metallic (electropositive) and valency is +3

Answer 2

• $\bf \large\underline{To\:Find }$

Electronic Configuration

Group and period

Nature and valency

• $\bf \large\underline{Solution }$:

Electronic configuration of ₁₃X²⁷:

1s² 2s² 2p⁶ 3s² 3p¹ or [Ne] 3s² 3p¹

Group: 13

period: 2

valency: 3

• $\bf \large\underline{Additional\:Points}$

Name of element: Aluminum

Symbol: Al

isotopes: 2

type: metal

block: p-block

Family: boron family

type of element: solid