Ncert Exercises & Solutions

The correct increasing order of tendency for catenation among group 14 elements?

1. $C > Si > Ge > Sn$

2. $C > > Si > Ge \approx Sn$

3. $Si > C > Sn > Ge$

4. $Ge > Sn > Si > C$

Hint: As the size of the element increases the tendency of catenation decreases.

The tendency to form long open or closed atom chains by a combination of some atoms in themselves is known as catenation.

The catenation is maximum in carbon and decreases down the group.

C > > Si > Ge \approx Sn > Pb

This is due to the high bond energy of C-C bonds. Down the group, size increases and electronegativity decreases,

thereby, a tendency to show catenation decreases.