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JEE CHEMISTRY MCQ: CLASSIFICATION OF ELEMENTS AND PERIODICITY IN PROPERTIES

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Analyzing +4 | -1

Assertion : Size of

\mathrm{Ca}^{2+}

is larger than

\mathrm{K}^{+}

.

Reason : Number of electrons in

\mathrm{Ca}^{+2}

is more than

\mathrm{K}^{+}

View answer and explanation

Correct option: D

If both Assertion & Reason are false

The correct answer is If both Assertion & Reason are false because Ca2+ is smaller than K+ due to higher effective nuclear charge, and Ca2+ has fewer electrons than K+.

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