Question

7. What is atomic radius? How it varies along the period and down the group Why​

Answer 1

Answer:

Atomic radius generally decreases from left to right across a period. This is because within a period, the outer electrons are present in the same valence shell and the atomic number increases from left to right across a period, resulting in an increased effective nuclear charge

Answer 2

Answer:

The atomic radius of a chemical element is a measure of the size of its atom . In general, the atomic radius decreases as we move from left to right in a period with increase in nuclear charge of element.