Elements X and Y have electronic configurations 1s22s22p6 and 1s22s22p63s23p1 respectively. When they combine, the formula of the compound formed is
-
A.
XY -
B.
YX -
C.
X2Y3 -
D.
Y2X3
Correct Answer: Option D
Explanation
(frac{text{Element X}}{1s^22s^21p^4})
Valency of X is 2
(frac{text{Element Y}}{1s^22s^22p^63s^23P^1})
valency of Y is 3
There is an exchange of valency when a compound is being formed. Hence, we have Y2X3