i keep getting these wrong ...please explain How many valence electrons are in t

Question

i keep getting these wrong ...please explain
How many valence electrons are in the following? (Remember toadd an electron for each negative charge or to subtract one foreach positive charge).
6810121416182022242628323436384042444648 ICl2
6810121416182022242628323436384042444648 PCl5
6810121416182022242628323436384042444648 CNO i keep getting these wrong ...please explain
How many valence electrons are in the following? (Remember toadd an electron for each negative charge or to subtract one foreach positive charge).
6810121416182022242628323436384042444648 ICl2
6810121416182022242628323436384042444648 PCl5
6810121416182022242628323436384042444648 CNO

Explanation / Answer

For ICl2- - The total valanceelectrons = 7e ( For I) + 2*7e ( For 2 Cl) + 1e( Fornegative Charge)                                                           = 22 electrons. For PCl5 - The total valance electrons = 5e ( For P) + 5*7e ( For Cl) = 40 electrons For CNO- - The total number of valanceelectrons = 4e (For C) + 5e (For N) + 6e (For O) + 1e (For Negativecharge)                                                                              = 16 electrons.

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