5*.
a)
Z=19, 1s2 2s2 2p6 3s2 3p6 4s1
Z = 21, 1s2 2s2 2p6 3s2 3p6 4s2 3d1
Z = 29, 1s2 2s2 2p6 3s2 3p6 4s1 3d10
Z = 33, 1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p1
b)
straturi = 4
substraturi = 1s, 2s, 2p, 3s, 3p, 4s, 3d = 7
orbitali = 4xs + 2x3xp + 1xd = 11
c) K ( 4s1) , Sc (3d1) si As (4p1)
d) toti atomii au cate 1 e- necuplat