Question

Which has largest size?
(a) Sc 3+
(c) La3+
(d) Ac3+
(b) y3+​

Answer 1

Answer:

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Explanation:

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Answer 2

The largest size is of $Ac^3^+$

Explanation:

• The largest size is of $Ac^3^+$

• Atomic no of Scandium is 21, Yttrium is 39, Lantanium is 57, and actinium is 89.

• These all elements are taken from group 3 of the periodic table.

• Moving down a group that is from scandium to actinium the size of the element increases which results in the formation of larger ions hence the largest size of the ion formed will be of Actinium that i $Ac^3^+$.

• The increasing order of size will be as follows -

        $Sc ^3^+<Y ^3^+< La ^3^+ <Ac ^3^+$