1.

All the elements in a group (family) have a common valency. For example , all the elements of the carbon family (carbon, silicon , germanium , tin and lead) have common valency four . However , some of these elements can also have valency two . Which of the following can have valency two ?

Answer»

Silicon , germanium and tin
Only germanium and tin
Germanium , tin and LEAD
Only tin and lead

Solution :`{:(GE - +2 "," +4) , (Sn - + 2 "," + 4), (PB- + 2 "," + 3):}`


Discussion

No Comment Found

Related InterviewSolutions