Question on: WAEC Chemistry - 1989
The electronic configuration of two atoms X and Y are as follows: X - 1s 2 2s 22p 63s 1, Y -1s 22s 22p 63s23p 64s 2 which of the statements below is true of the position of X and Y in the Periodic Table?
A
x belongs to group 1, Y belongs to period 2,
B
x belongs to group 1, Y belongs to period 4
C
x belongs to group 2, Y belongs to period 1
D
x belongs to group 3, Y belongs to period 2
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Correct Option: B
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