y = x+1
y prin cedare formeaza ion cu 2 sarcini pozitive
=> y-2 = 10 (Ne) => y = 12
=> x = y-1 = 11
a)
Y²⁻: 1s2 2s2 2p6
b)
Zy = 12: 1s2 2s2 2p6 3s2
c)
grupa 2 (II-A), per. 3
d)
Zx = 11: 1s2 2s2 2p6 3s1
e)
X si Y: caracter electrochimic = electropozitiv
caracter chimic = metalic
