Question

Repede va roooggggg!!!!

Answer 1

Răspuns:

Explicație:

-------------------------------------------------------------------------------------------------------------

a) X = Calciu (C), Z=20, A=40.

   Y = Sulf (S), Z= 16, A=32.

-------------------------------------------------------------------------------------------------------------

b) X = 20p+, 20n^0, 20e-.

   Y = 16p+, 20n^0,20e-.

-------------------------------------------------------------------------------------------------------------

c) X = K=2, L=8, M=10

   Y = K=2, L=8, M=6

-------------------------------------------------------------------------------------------------------------

d) X = grupa: IIA(2), perioada: 4

   Y = grupa: VIA(16), perioada: 3

-------------------------------------------------------------------------------------------------------------