1s2 2s2 2pix 2p1y 2p1z is this is correct for nitrogen in ground state?

Answer 1

Yes, that's correct. The notation might be wrong, though.

Answer 2

The electron configuration you provided is not accurate for nitrogen in its ground state. The correct electron configuration for nitrogen in its ground state is 1s2 2s2 2p3, as it has 7 electrons.