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a) because the number of shell remains same and number of proton remains same as a result the attractive power of nucleus increase then it pull the shells (including electron) closer ,hence atomic radius decrease.
b)because proton increases and the attraction of electrons toward nucleus increases and hence the capacity of elements to loss electron decrease , hence metallic character decrease.
c)Atomic radius increase because the number of shell increase as a result distance from nucleus to outermost shell increases.
d)Because the number of electrons in outermost shell remains same.
b)because proton increases and the attraction of electrons toward nucleus increases and hence the capacity of elements to loss electron decrease , hence metallic character decrease.
c)Atomic radius increase because the number of shell increase as a result distance from nucleus to outermost shell increases.
d)Because the number of electrons in outermost shell remains same.
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