An element X belong to 3rd period and group 17 of the periodic table. Find outa) the number of Valence Electronsb) is it a metal or nonmetalc) name the elementd) formula of its compound with sodium Plzz help!!! Guyzzz!!!
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solution,
since, the element belong to 3rd perioad and group 17 so the atomic number of element is chlorine(cl).
a) electronic configuration of chlorine(x)= 2,8,7
valence electron=7
valency=8-7=1
b) As, group 17 contains non metal so element (x) is non metal.
c) The element is chlorine.
d) The formula of sodium= Na
and, the formula of chlorine= Cl2
so,
Na+Cl2= NaCl
after balance,
2Na+Cl2= 2NaCl
since, the element belong to 3rd perioad and group 17 so the atomic number of element is chlorine(cl).
a) electronic configuration of chlorine(x)= 2,8,7
valence electron=7
valency=8-7=1
b) As, group 17 contains non metal so element (x) is non metal.
c) The element is chlorine.
d) The formula of sodium= Na
and, the formula of chlorine= Cl2
so,
Na+Cl2= NaCl
after balance,
2Na+Cl2= 2NaCl
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