TS EAMCET 10-Sep-2020 Shift 1 Solved Paper

Section: Chemistry

Question : 123 of 160

Marks: +1, -0

Assertion (A) : Mg2+ and Al3+ are isoelectronic but the magnitude o f ionic radius of Al3+ is less than that in Mg2+
Reason (R ): The effective nuclear charge oil the outermost electrons in Al+3 is greater than that in Mg2+

(A) is true, (R) is true and (R) is the correct explanation for (A)
(A) is true. (R) is true but (R) is the not the collect explanation for A
(A) is true but (R) is false
(A) is false but (R) is true

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