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The atomic numbers of X and Y are 11 and...

The atomic numbers of X and Y are 11 and 7 respectively.
a. Write the subshell electronic configuration of an X and Y.
b. Find the group and period in which X and Y are included.

Text Solution

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`a. X_11 = 1s^2 2s^2 2p^6 3s^2`
`Y_7 = 1s^2 2s^2 2p^3`
b. X period - 3 group - 1
Y period -2 group-15
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