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ICSE Class 9 Chemistry Question 29 of 39

Atomic Structure and Chemical Bonding — Question 10

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Question

Question 10

Compare :

(a) sodium atom and sodium ion

(b) chlorine atom and chloride ion, with respect to

(i) atomic structure, (ii) electrical state

Answer

(a) Comparison between sodium atom and sodium ion

PropertySodium AtomSodium Ion
Atomic StructureIt has one electron in M shell.It has 8 electrons in L shell.
Electrical StateIt is neutral.It is positively charged.

(b) Comparison between chlorine atom and chloride ion

PropertyChlorine AtomChloride Ion
Atomic StructureIt has 7 electrons in M shell.It has 8 electrons in M shell.
Electrical StateIt is neutral.It is negatively charged.