Consider the following statements:(i) Na_2O

Question

(D) $(i)$ Acidic property increases with the increase in oxidation number of the central atom and for the same oxidation number,acidic nature increase

Vedclass · Accepted Answer

Vedclass · Answer

(D) $(i)$ Acidic property increases with the increase in oxidation number of the central atom and for the same oxidation number,acidic nature increases along the period. Thus,$Na_2O$ (basic) $$(ii)$ The electron gain enthalpy of $Cl$ is more negative than that of $F$ due to the small size and inter-electronic repulsion in $F$. The order is $Cl > F > Br$. Thus,this statement is False $(F)$.$(iii)$ Ionic size increases with an increase in the number of electrons (anions) and decreases with a loss of electrons (cations). The order $M^{2-} > M^{-} > M^{+} > M^{2+}$ is correct. This statement is True $(T)$.$(iv)$ The second ionisation enthalpy involves removing an electron from $M^{+}$ ion. $K^{+}$ has a stable noble gas configuration $([Ar])$,while $Cu^{+}$ has a $d^{10}$ configuration. Removing an electron from the stable noble gas configuration of $K^{+}$ requires much more energy than from $Cu^{+}$. Thus,the second ionisation enthalpy of $K$ is greater than that of $Cu$. This statement is False $(F)$.Therefore,the correct sequence is $(i)-T, (ii)-F, (iii)-T, (iv)-F$. The correct option is $(d)$.

Column-$I$	Column-$II$
$A. Z = 37$	$P. p-$ block
$B. Z = 42$	$Q. f-$ block
$C. Z = 34$	$R. d-$ block
$D. Z = 92$	$S. s-$ block

Similar Questions

Choose the correct option regarding the following statements:
Statement-$1$: Nitrogen has lesser electron gain enthalpy than oxygen.
Statement-$2$: Oxygen has lesser ionization enthalpy than nitrogen.

Match the following elements with their respective blocks in the periodic table based on their atomic number $(Z)$:
Column-$I$ Column-$II$
$A. Z = 37$ $P. p-$ block
$B. Z = 42$ $Q. f-$ block
$C. Z = 34$ $R. d-$ block
$D. Z = 92$ $S. s-$ block

Which of the following pairs shows opposite trends when moving from left to right in a period and from top to bottom in a group?

If the period number and group number of any representative element are the same,then which of the following statements is incorrect regarding such type of element in its ground state? (Period number and group number are according to the modern form of the periodic table)

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