Statement - I: $C l^{-} a n d C a^{2 +}$ are isoelectronic species.
Statement - II: Isoelectronic species should have same charges.

Statement - I is true; Statement - II is true; Statement - II is correct explanation for Statement - I

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Statement - I is true; Statement - II is true; Statement - II is NOT the correct explanation for Statement - I

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Statement - I is true; Statement - II is false

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Statement - I is false; Statement - II is true

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Solution

The correct option is C
Statement - I is true; Statement - II is false

Statement - I: True, as both have 18 electrons.
Statement - II: False, for isoelectronic species number of electrons are same, not the charge.

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Statement - I: Cl− and Ca2+ are isoelectronic species. Statement - II: Isoelectronic species should have same charges.

The correct option is C Statement - I is true; Statement - II is false Statement - I: True, as both have 18 electrons. Statement - II: False, for isoelectronic species number of electrons are same, not the charge.

Statement - I: $C l^{-} a n d C a^{2 +}$ are isoelectronic species.
Statement - II: Isoelectronic species should have same charges.

The correct option is C
Statement - I is true; Statement - II is false

Statement - I: True, as both have 18 electrons.
Statement - II: False, for isoelectronic species number of electrons are same, not the charge.