1. What 3- ion has the following ground state electron configuration? 1s2 2s2 2p

Question

1. What 3- ion has the following ground state electron configuration?

1s2 2s2 2p6 3s2 3p6

        oxide ion
        nitride ion
        sodium ion
        aluminum ion
        phosphide ion
2.

1
      3
      5
      7
      9

3.

      0
      2
      6
      7
      14

4.

       K+
      Rb+
      Na+
      Tl+
      Y+

5.

      Ni2+
      Be2+
      Ca2+
      Cu2+
      Mn2+

6.

Which element has the electron configuration [Ar]3d104s1?

        Cu
        Zn
        Ga
        Ag
        Co

1. What 3- ion has the following ground state electron configuration?

1s2 2s2 2p6 3s2 3p6

Explanation / Answer

1 aluminum ion

2)5

3) 7

4) K+

5)Mn2+

6) Zn

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