OMTEX CLASSES: 1. Atomic radius goes on decreasing while going from left to right in a period.

1. Atomic radius goes on decreasing while going from left to right in a period.

7. Write Scientific reasons.

1. Atomic radius goes on decreasing while going from left to right in a period.

Ans. 1. While going from left to right within a period, the atomic number increases one by one, meaning the positive charge on the nucleus increases by one unit at a time.

2. However, the additional electron gets added to the same outermost shell.

3.  Due to the increased nuclear charge, the electrons are pulled towards the nucleus to a greater extent and there by the size of the atom decreases. Thus the atomic radius goes on decreasing while going from left to right in a period.