Respuesta :

ashish4112119

Answer:

a) Br-, Kr, Sr2+

Explanation:

plus and minus sort of mean opposite here

Br has 35

Br- has 36

Sr has 38

Sr2+ has 36

Kr has 36

in which of the following sets do all species have the same number of electrons (isoelectronic)?

a) Br-, Kr, Sr2+

b) C, N3-, O2-

c) Mg2+, Sr2+, Ba2+

d) O, O2-, O2+

Mg2+ has 10

Sr2+ has 36

Ba2+ has 54

Br- has 36

Kr has 36

Sr2+ has 36

C has 6

N3- has 10

O2- has 10

O has 8

O2+ has 6

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