Elements X and Y have electronic configurations 1s22...
Elements X and Y have electronic configurations 1s22s22p4 and 1s22s22p23s63p1 respectively. When they combine, the formula of the compound formed is?
XY
YX
X2Y3
Y2X3
Correct answer is D
Element X1s22s21p4
Valency of X is 2
Element Y1s22s22p63s23P1
valency of Y is 3
There is an exchange of valency when a compound is being formed. Hence, we have Y2X3
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