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hello mate the answer is FLOURINE(9)
#hope it help uh.
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harshitagarwal624:
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the answer is fluorine with atomic number 9
atomic number increases across the group
nuclear charge also increases across the group
the additive electron enters the same shell
hence the nucleus holds the electrons effectively resulting in the reduction of atomic radii
atomic number increases across the group
nuclear charge also increases across the group
the additive electron enters the same shell
hence the nucleus holds the electrons effectively resulting in the reduction of atomic radii
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