How will the tendency to gain electrons change as we move from left to right across a period
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according to the trends given in the NCERT textbook
the ability to gain electrons decreases
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it chanfes because from left to eight in periodic table size of atom decreases. so tendency to gain or loose electron changes.
from left to right the tendency to gain electron increases.
as in 1 and 2 group loose electron.
in 13 to 17 group atoms gain electron to complete octet and 18 group is of noble gases which dont loose or gain electrons as they had already complete octets.
exceptions are in every group.
i hope u understand
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