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a) What property do all elements in the ...

a) What property do all elements in the same column of the periodic table as boron share?
b) What property do all elements in the same column of the periodic table as fluorine share? 

Text Solution

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a) The element boron lies in group 13. Hence, it has 3 valence electrons. All elements in the same column as boron in the periodic table have 3 valence electrons.
b] The element fluorine lies in group 17. Hence, it has 17 - 10 = 7 valence electrons and its valency = 8 - 7 = 1. All elements in the same column as fluorine in the periodic table have seven valence electrons and a valency of I.
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