Q1 of 45 Page 544

Arrange the following elements in the increasing order of their atomic size B, C, N, O and F.

The atomic size decreases along the period

The order is F< O< N< C <B


This due to increase in nuclear charge which tends to pull the valence electron closer to the nucleus and reduced the size of atom.


More from this chapter

All 45 →
8

When does anaerobic respiration occurs in our body? Give an example.

 9

What is the purpose of sepration of waste into blue and green colour dustbins?

 2

(i) A metal ‘R’ is found in nature as RCO3. It is used in galvanising iron articles. Name the metal.

(ii) Give any two observations when sodium is dropped in Water.

 3

What will the polarity be one end of a solenoid if the current appears to be flowing anticlockwise in it?