Lead is used as
Telephone wires
Additive to petrol
For making alloys
All of the above
Which chemical equation denotes the Plumbo solvency phenomenon?
3Pb + 2O2 → Pb3O4
2Pb + O2 + 2H2O → 2Pb(OH)2
2Pb + O2 → 2PbO
None of these
Which is the general electronic configuration of group 15 elements?
ns2 np3
ns2 np2
ns2 np4
ns2 np6
Electronic configuration of group 16 elements is
ns2np4
ns2np3
ns2np5
ns2np6
