Element P has atomic number 19. To which group does P belongs to ?

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Solution

The correct option is A 1
Electronic configuration - $1 s^{2} 2 s^{2} 2 p^{6} 3 s^{2} 3 p^{6} 4 s^{1}$ .We have 19 electrons in that with valence shell 4 hence period is 4 and valence electron 1 hence group number is 1 and it has to donate electrons to get octet configuration.Hence it is a metal.

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