Question

M-a puteți ajuta va rog la exercițiul 5 !!! Urgent !! Dau coroana!!!!

Answer 1

4.

a)

K2-e L8e- M3e- => 13 e-

=> Z = 13, grupa 13 (III-A), per. 3, valenta 3

b)

K2-e L8e- => 10 e-

=> Z = 10, grupa 18 (VIII-A), per. 2, valenta nu are

c)

K2-e L4e- => 6 e-

=> Z = 6, grupa 16 (VII-A), per. 2, valenta 2

d)

K2-e L8e- M2e- => 12 e-

=> Z = 12, grupa 12 (II-A), per. 3, valenta 2

e)

K2-e L8e- M5e- => 15 e-

=> Z = 15, grupa 15 (V-A), per. 3, valenta 3

5.

A = 35, 18e-

=> Z + 1 = 18e- => Z = 18-1 = 17e-

=> p+ = e- = 17

A = Z + n0 => n0 = 35 - 17 = 18

config. electronica = K2e- L8e- M7e-

valenta fata de H = 1

fata de O = 1, 3 si 5

fata de metale = ca cea fata de H = 1