Question

An element has electronic configuration as (2,8,3) Now , ans. the following questions?
1. What is its atomic number?
2. To which period does the element belong?
3. What is the group of that element?
4. What is the name and velency of that element?

STD . 10th​

Answer 1

Explanation:

An element has electronic configuration as (2,8,3) Now , ans. the following questions 1. What is the atomic number of that element?

Answer 2

1. 13

2. period 3

3. group 13

4. aluminum, valency 3+