Chemisty Question Please help??

1 ⤊

Which electron configuration represents a transition element?

1)[Ar] 3d5,4s2
2)[Ar] 3d10,4s2,4p6
3)1s2,2s2,2p5
4)[Ne] 3s2

2006-12-31 06:24:18 · 2 answers · asked by Jesse C 2 in Science & Mathematics ➔ Chemistry

1, because it has an unfilled d-shell. The d-shell of 2 is filled.

2006-12-31 06:27:18 · answer #1 · answered by steve_geo1 7 · 1⤊ 0⤋

1, which is the ground state for manganese (Mn). 2 is the ground state for krypton (Kr), 3 is that of fluorine (F), and 4 is magnesium (Mg).

2006-12-31 08:23:57 · answer #2 · answered by TheOnlyBeldin 7 · 0⤊ 0⤋