JEE MAIN - Chemistry (2019 - 12th April Morning Slot - No. 7)
The group number, number of valence electrons, and valency of an element with atomic number 15,
respectively, are:
16, 6 and 3
15, 6 and 12
16, 5 and 2
15, 5 and 3
Explanation
P[15] = [Ne] 3s23p3
Group number = 10 + valance shell electron = 10 + 5 = 15
number of valence electrons = 5
Valency = 3
Group number = 10 + valance shell electron = 10 + 5 = 15
number of valence electrons = 5
Valency = 3
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