Use the periodic table to answer the following questions.
a) Identify elements with five electrons in the outer shell.
b) Identify elements that would tend to loose two electrons.
c) Identify elements that would tend to gain two electrons.
d) Identify the group having metal, non-metal, liquid as well as gas at the room temperature.

Explanation

Elements having five electrons in the outer subshell are N, P, As, Sb, Bi.
Elements that would tend to loose two electrons are Be, Mg, Ca, Sr, Ba.
c) Elements that would tend to gain two electrons are O, S, Se, Te.
The group having metal, non-metal, liquid as well as gas at the room temperature is group 13.