Silicon is the second most abundant element (~27.2%)in the earth's after oxygen (45.5 %) Carbon. Silicon, germanium, tin and lead constitute the group 14 of the periodic table. Chemistry of silicon is distinctly different from that of carbon. For example, under standard conditions CO_(2) is a gas whereas SiO_(2) is a covalent solid. The order in 1.4 can be explained on the basis of : (a)atomic size , (b)electronegativity (c )bond strength , (d)non-metallic character

Silicon is the second most abundant element (~27.2%)in the earth's aft

1.	Silicon is the second most abundant element (~27.2%)in the earth's after oxygen (45.5 %) Carbon. Silicon, germanium, tin and lead constitute the group 14 of the periodic table. Chemistry of silicon is distinctly different from that of carbon. For example, under standard conditions CO_(2) is a gas whereas SiO_(2) is a covalent solid. The order in 1.4 can be explained on the basis of : (a)atomic size , (b)electronegativity (c )bond strength , (d)non-metallic character
Answer» ANSWER :B::D