# Why atomic radius goes on increasing down a group?

## Why atomic radius goes on increasing down a group?

The atomic radius goes on increasing down a group, as atomic size increases down the group. This is because new shells are being added as we go down the group. This increases the distance between the outermost electrons and the nucleus so that the atomic size increases in spite of the increase in nuclear charge.

## Why does the radius of an atom decrease?

Atomic radius decreases across a period because valence electrons are being added to the same energy level at the same time the nucleus is increasing in protons. The increase in nuclear charge attracts the electrons more strongly, pulling them closer to the nucleus.

How does the atomic radius change as you go?

An atom gets larger as the number of electronic shells increase; therefore the radius of atoms increases as you go down a certain group in the periodic table of elements. In general, the size of an atom will decrease as you move from left to the right of a certain period.

### Why does atomic radius increase down the group Class 10?

As we move down a group, the nuclear charge goes on decreasing. The electrons get added in new shells which will screen the nucleus. Thus, the distance between the nucleus and the last electron will increase and hence, the atomic radius increases down a group.

### Why atomic radius goes on decreasing while going from left to right in a period?

Atomic Radius to right in a radius decreases while going from left to right in a period. This is because when we move left to right in a period atomic number increases thus the valence electron feels more attraction towards the nucleus. thus size decreases.

Why does ionic radius decrease down a group?

As you move down a column or group, the ionic radius increases. Ionic radius decreases moving from left to right across a row or period. More protons are added, but the outer valence shell remains the same, so the positively charged nucleus draws in the electrons more tightly.

#### Why does the radius of an atom increase?

When moving down a group of the periodic table, the atomic radius increases because of the presence of additional principal energy levels, which are further away from the nucleus.

#### Does atomic radius increase down a group?

In general, atomic radius decreases across a period and increases down a group. Down a group, the number of energy levels (n) increases, so there is a greater distance between the nucleus and the outermost orbital. This results in a larger atomic radius.

Why does the atomic radius increase as you go from the top to the bottom of a chemical family?

This is caused by the increase in the number of protons and electrons across a period. One proton has a greater effect than one electron; thus, electrons are pulled towards the nucleus, resulting in a smaller radius. Atomic radius increases from top to bottom within a group. This is caused by electron shielding.

## Why does atomic radius increase down the group Brainly?

Answer: – The number of energy levels increases as you move down a group as the number of electrons increases. Therefore, the atomic radius increases as the group and energy levels increase.

## Why does the atomic radius increase down Group 2?

Going down group 2: there are more filled shells between the nucleus and the outer electrons … so the electrons in the higher energy levels are further from the nucleus … the atomic radius increases.

What happens to the atomic radius when we move from left to right?

Moving from left to right across a period, the atomic radius decreases. The nucleus of the atom gains protons moving from left to right, increasing the positive charge of the nucleus and increasing the attractive force of the nucleus upon the electrons.