Advertisements
Advertisements
प्रश्न
Catenation i.e., linking of similar atoms depends on size and electronic configuration of atoms. The tendency of catenation in Group 14 elements follows the order:
विकल्प
C > Si > Ge > Sn
C >> Si > Ge ≈ Sn
Si > C > Sn > Ge
Ge > Sn > Si > C
उत्तर
C >> Si > Ge ≈ Sn
Explanation:
In group 14, as we move down from C to Sn, the size increases and electronegativity decreases. This results in the decrease in M – M bond energy. Hence the catenation property decreases.
Bond energy is the amount of energy required to fragment the atoms combined in a molecule are born into separate atoms. Carbon has maximum bond energy as compared to its other group elements. Therefore, shows maximum catenation property.
APPEARS IN
संबंधित प्रश्न
Discuss the pattern of variation in the oxidation states of C to Pb.
Explain the following reaction.
Silicon is heated with methyl chloride at high temperature in the presence of copper.
Rationalise the given statement and give a chemical reaction:
Lead (IV) chloride is highly unstable towards heat.
Rationalise the given statement and give a chemical reaction:
Lead is known not to form an iodide, PbI4.
Classify the following oxide as neutral, acidic, basic or amphoteric:
PbO2
Write suitable chemical equations to show the nature of the following oxide.
CO2
The reason for small radius of Ga compared to Al is:
(i) poor screening effect of d and f orbitals.
(ii) increase in nuclear charge.
(iii) presence of higher orbitals.
(iv) higher atomic number.
Give reasons for the following:
CCl4 is immiscible in water, whereas SiCl4 is easily hydrolysed.
Explain the following:
Silicon forms \[\ce{SiF^{2-}6}\] ion whereas corresponding fluoro compound of carbon is not known.
Explain the following:
BF3 does not hydrolyse.
