A. [AR]3D104S1. ZĂ=Ă29ĂĂ CUĂĂ IBB. [AR]3D54S1. Z = 24 CR VIBC. [...

câu 48: - BAI 1 2 DAP AN BANG TUAN HOAN
BAI 1 2 DAP AN BANG TUAN HOAN

Câu 48:

A. [Ar]3d

10

4s

1

. Ză=ă29ăă Cuăă IB

B. [Ar]3d

5

4s

1

. Z = 24 Cr VIB

C. [Ar]3d

10

4s

2

. Z = 30 Zn IIB

D. [Ar]3d

10

4s

2

4p

1

. Z = 31 Ga IIIA

áp án: D