MCQ
Lewis acid are those substances
- ✓Which accept electron pair
- BWhich provide ${H^ + }$ion in the solution
- CWhich give electron pair
- DWhich accept $O{H^ - }$ion
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$(I)$ The radius of an anion is larger than that of the parent atom.
$(II)$ The ionization energy generally increases with increasing atomic number in a period.
$(III)$ The electronegativity of an element is the tendency of an isolated atom to attract an electron.
Which of the above statements is/are correct?
(Given : $\left.pK _{ a }\left( CH _{3} COOH \right)=4.76\right)$
$\log 2=0.30$ $\log 3=0.48$ $\log 5=0.69$ $\log 7=0.84$ $\log 11=1.04$
$(A)$ $\mathrm{Sc}$ $(B) \mathrm{Cr}$ $(C) \mathrm{V}$ $(D)$ $\mathrm{Ti}$ $(E)$ $\mathrm{Mn}$
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