“4s” sub shell has ……than the 3d sub shell.
a) lower
b) higher
c) same
d) none of these
Phosphorous has an electronic configuration of …………
a) 1s2,2s2,2p6,3s1,3p4
b) 1s2,2s2,2p6,3s2,3p3
c) 1s2,2s2,2p6,3s2,3p1
d) 1s2,2s2,2p6,3s2,3p1
Increasing order of energy of sub shells is...…
a)1s<2s<2p>3p>3s>4s>3d
b) 1s<2s<2p>3s>3p>4s>3d
c) 1s<2s<2p>3s>3p>3d>4s
d) 1s<2s<2p>3s>4s>3p>3d
Hydrogen has electronic configuration.
a)1s2
b) 1s1
c) 2s1
d) 2s1
Element having “5” atomic number has electronic configuration.
a) 1s2,2s1,2p2
b) 1s1,2s2,2p2
c) 1s2,2s2,2p1
d) 1s1,2s1,2p3
Helium has electronic configuration ………
a) 1s2
b) 3s2
c) 2s2
d) 2s1
