A, B,and C are hydroxy-compounds of the eleme | vedclass

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(C) is acidic,so $X$ is a non-metal (e.g.,$P$).$B$ is amphoteric,so $Y$ is an amphoteric element (e.g.,$Al$).$C$ is strongly alkaline,so $Z$ is an alk

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$II, IV$ only correct

Vedclass · Answer

(C) is acidic,so $X$ is a non-metal (e.g.,$P$).$B$ is amphoteric,so $Y$ is an amphoteric element (e.g.,$Al$).$C$ is strongly alkaline,so $Z$ is an alkali metal (e.g.,$Na$).Since $X, Y, Z$ are in the same period,the order of atomic number is $Z $I$: False,$X$ is a non-metal.$II$: Electronegativity increases from left to right,so it decreases from $X$ to $Y$ to $Z$. This is true.$III$: Atomic radius decreases from left to right,so the order is $Z > Y > X$. The statement says $X, Y, Z$ decreases,which is false.$IV$: $X$ (Phosphorus),$Y$ (Aluminium),$Z$ (Sodium) is a valid sequence. This is true.Therefore,$II$ and $IV$ are correct.

$A. S \rightarrow S^{-}$	$P. \text{Endothermic process}$
$B. N^{-} \rightarrow N$	$Q. \text{Exothermic process}$
$C. O^{-} \rightarrow O^{2-}$	$R. \text{Inert gas configuration in product}$
$D. P \rightarrow P^{-}$	$S. \text{Half filled configuration in product}$

Similar Questions

Which of the following orders is not correct for the given property?

Which has maximum $EA$,$EN$ and $IP$ respectively $:-$
$A = 1s^2 \ 2s^2 \ 2p^6$
$B = 1s^2 \ 2s^2 \ 2p^6 \ 3s^2 \ 3p^5$
$C = 1s^2 \ 2s^2 \ 2p^5$
$D = 1s^2 \ 2s^2 \ 2p^6 \ 3s^1$

Which of the following statements is not correct?

The electronic configurations of four elements are:
$I. [Xe] \, 6s^1$
$II. [Xe] \, 4f^{14} \, 5d^1 \, 6s^2$
$III. [Ar] \, 4s^2 \, 4p^5$
$IV. [Ar] \, 3d^7 \, 4s^2$
Select the incorrect statement about these elements.

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