NCERT Solution for Class 10 Science Chapter 5
Periodic Classification of Elements
NCERT Books for Session 2022-2023
CBSE Board and UP Board
Exercises Questions
Page No-91
Questions No- 4 Part-2
What property do all elements in the same column of the Periodic Table as fluorine have in common?
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All elements belong to same column as fluorine, are non-metals and are highly electronegative in character. All of them have valence electrons equal to seven, and thus can accept one electron to complete their octet.
Elements in the same column or group as fluorine form acidic oxides and have seven electrons in their outermost shells and have valency of one.
All the elements in the same column as fluorine have the same number of valence
electrons (7). Hence, they all have valency equal to 1.
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