can u answer 15 and 16
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i don't now so sorry dude
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Element 'X' is sulphur(2,8,6)
Thus, it's atomic number will be =2+8+6=16
Thus the element is Si
It belongs to p-block of periodic table.
Its electronic configuration can also be written as [Ne]3s23p4
Thus it belongs to 3rd period
Group number =16
Its valency will be 8−6=2
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