AP EAPCET 2025 - 27th May Morning Shift | Periodic Table and Periodicity Question 2 | Chemistry

$$ \begin{array}{lllll} \hline \text { Ion } & Q^{a+} & X^{b+} & Y^{c+} & Z^{\alpha+} \\ \hline \text { Radius (pm) } & 53 & 66 & 40 & 100 \\ \hline \end{array} $$

$Q^{a+}, X^{b+}, Y^{c+}, Z^{d+}$ are respectively

$\mathrm{Mg}^{2+}, \mathrm{Al}^{3+}, \mathrm{Na}^{+}, \mathrm{Si}^{4+}$

$\mathrm{Al}^{3+}, \mathrm{Si}^{4+}, \mathrm{Mg}^{2+}, \mathrm{Na}^{+}$

$\mathrm{Mg}^{2+}, \mathrm{Si}^{4+}, \mathrm{Al}^{3+}, \mathrm{Na}^{+}$

$\mathrm{Al}^{3+}, \mathrm{Mg}^{2+}, \mathrm{Si}^{4+}, \mathrm{Na}^{+}$

AP EAPCET 2025 - 26th May Evening Shift

MCQ (Single Correct Answer)

-0

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

$\mathrm{Li}<\mathrm{Na}<\mathrm{K}$ - metallic radius

$\mathrm{Br}<\mathrm{F}<\mathrm{Cl}$ - electron gain enthalpy

$\mathrm{C}<\mathrm{N}<\mathrm{O}$ - first ionisation enthalpy

$\mathrm{Mg}^{2+}<\mathrm{Na}^{+}<\mathrm{F}^{-}$- ionic radius

AP EAPCET 2025 - 24th May Morning Shift

MCQ (Single Correct Answer)

-0

The order of negative electron gain enthalpy of $\mathrm{Li}, \mathrm{Na}$, $\mathrm{S}, \mathrm{Cl}$ is

$\mathrm{Na}>\mathrm{S}>\mathrm{Cl}>\mathrm{Li}$

$\mathrm{Cl}>\mathrm{S}>\mathrm{Li}>\mathrm{Na}$

$\mathrm{Cl}>\mathrm{Li}>\mathrm{S}>\mathrm{Na}$

$\mathrm{Li}>\mathrm{Na}>\mathrm{S}>\mathrm{Cl}$

AP EAPCET 2025 - 23rd May Evening Shift

MCQ (Single Correct Answer)

-0

The period and group numbers of the element having maximum electronegativity in the long form of periodic table respectively, are

2,17

3,17

1,18

2,16

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