Question

Stabilește N.O. pentru următoarele elemente

Answer 1

Cl2O7, 2x+7(-2) = 0 => x =14/2 = +7

PbO2, x+2(-2) = 0 => x = +4

K2Cr2O7, 2(+)+2x+7(-2) = 0 => x = (14-2)/2 = +6

Na2SO4, 2(+1)+x+4(-2) = 0 => x = +2

NH2OH, x+2(+1)+(-2)+1 =0 => x = -1

PO3(3-), x+3(-2) = -3 => x = +3

CrO4, x+4(-2) =0 => x = +4

ClO3(-), x+3(-2) = -1 => x = +5