In going down the group in nitrogen family classify the elements into different catagories.

Why do we need to classify drugs in different ways?

"On going down a group in the P-block elements the non metallic character decreases" Explain.

A solid sphere rolls down two different inclined planes of the same heights but different angles of inclination, (a) Will it reach the bottom with the same speed in each case? (b) Will it take longer to roll down one plane than the other? (c) If so, which one and why?

Write down the electronic configuration of the first three elements of group 1.

Nitrogen is relatively inactive element be-cause.

In what way is the electronic configuration of the transition elements different from that of non-transition elements?

Classify the following into elements, compounds and mixtures. Tin

Classify the following into elements, compounds and mixtures. Air