Question

pls answer fasttt i have exam tmrW​

Answer 1

Answer:

A. 12,12,12

B.4,4,5

C. 19,19,20

D 14,14,14

Answer 2

Answer:

1) For Mg

No. of electrons = 12

No. of neutrons = 24-12 = 12

2) For Be

No. of electrons. = 4

No.of neutrons = 9 - 4 = 5

3) For K

No. of electrons = 19

No. of neutrons = 39 - 19 = 20

4) For Si

No. of electrons = 14

No. of neutrons = 28 - 14 =14

NOTE:

Number of PROTONS is equal to

Number of ELECTRONS !!!!!!!!

Hope it helps!!!

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