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Repede va roooggggg!!!!

Repede Va Roooggggg class=

Răspuns :

Răspuns:

Explicație:

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

   Y = Sulf (S), Z= 16, A=32.

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

   Y = 16p+, 20n^0,20e-.

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

   Y = K=2, L=8, M=6

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

   Y = grupa: VIA(16), perioada: 3

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