Question

Exercitii chimie,va rog o rezolvare.

Answer 1

X, Z=29 , A=64

=> 1s2 2s2 2p6 3s2 3p6 4s1 3d10

blocul d elemente

gr. 11 (I-B), per. 4

gaz rar X = 1s2 2s2 2p6 3s2 3p6 3d10 Cu⁺

1 mol X = 64 g

1 mol .......... 64 g Cu ......... 10x6,022x10la23 e- d

                  4 g .................. n = 3,764x10la23 e- d

elementul X Z=31

=> 1s1 2s2 2p6 3s1 3p6 4s2 3d10 4p1

nr straturi = 4

substarturi = 8

bloc de elemente = p

gr. 13 (III-A), perioada = 4

=> 1s1 2s2 2p6 3s1 3p6 4s2 3d10

gaz rar => 1s1 2s2 2p6 3s1 3p6 3d10

1-f

2-d

3-c

4-b

5-a