Which of the following elements has the maxim | vedclass

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(D) The correct answer is $(D)$.In the periodic table,as we move from left to right across a period,the atomic radius decreases due to an increase in

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$Mg$

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(D) The correct answer is $(D)$.In the periodic table,as we move from left to right across a period,the atomic radius decreases due to an increase in effective nuclear charge.All the given elements ($Mg$,$Al$,$Si$,and $P$) belong to the $3^{rd}$ period.Their positions are: $Mg$ (Group $2$),$Al$ (Group $13$),$Si$ (Group $14$),and $P$ (Group $15$).Since $Mg$ is the leftmost element among these in the $3^{rd}$ period,it has the largest atomic radius.

Ion	Radius $(pm)$
$Q^{a+}$	$53$
$X^{b+}$	$66$
$Y^{c+}$	$40$
$Z^{d+}$	$100$

Which of the following elements has the maximum atomic radius?

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$K^{+}$,$Cl^{-}$,$Ca^{2+}$,and $S^{2-}$ ions are isoelectronic. The decreasing order of their ionic radii is:

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Observe the following data.
Ion Radius $(pm)$
$Q^{a+}$ $53$
$X^{b+}$ $66$
$Y^{c+}$ $40$
$Z^{d+}$ $100$
$Q^{a+}, X^{b+}, Y^{c+}, Z^{d+}$ are respectively

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Which of the following has the largest ionic radius?

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