MCQ
The element or elements whose position is anomalous in the periodic table is
- AHalogens
- B$Fe,\,Co$ and $Ni$
- CInert gases
- ✓Hydrogen
✓
Answer
Correct option: D.
Hydrogen
d
(d) It show similarities with both alkali metals as well as halogens.
(d) It show similarities with both alkali metals as well as halogens.
Need a full question paper?
Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.
Explore more
Similar questions
Buffer solutions have constant acidity and alkalinity because
Its basic strength is $10^{10}$ more than $I$ -dimethyl amino naphthalene. Reason for high basic strength is
→The solubility product of a sparingly soluble salt AB at room temperature is 1.21 × 10-6, its molar solubility is:
Which of the following is isomeric with methyl vinyl ether
The most importasnt active step in the development of periodic table was taken by
Correct name of the compound $C{H_3} - \mathop {\mathop {CH - C{H_3}}\limits_{|\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,} }\limits_{C{H_3}\,\,\,\,\,\,\,\,\,\,\,} $ is
→Calculate $\Delta H_f^o$ for $UBr_4$ from the $\Delta G^o$ of reaction and the $S^o$ values :- $U(s) + 2Br_2(\ell ) \to UBr_4(s);\,\,$ $\,\,\Delta G^o =\,-\,788.6\,\,kJ;$
$S^o (J/K-mol)\,\, 50.3, 152.3, 242.6$ .....$kJ/mol$
→$S^o (J/K-mol)\,\, 50.3, 152.3, 242.6$ .....$kJ/mol$
Class $XII$ students were asked to prepare one litre of buffer solution of $pH\,8.26$ by their chemistry teacher. The amount of ammonium chloride to be dissolved by the student in $0.2\,M$ ammonia solution to make one litre of the buffer is $.....\,g$ (Given $pK _{ b }\left( NH _{3}\right)=4.74$; Molar mass of $NH _{3}=17\,g\,mol ^{-}$ ; Molar mass of $NH _{4} Cl =53.5\,g\,mol ^{-1}$ )
→The bond dissociation energies of H2, Cl2, and HCl are 104, 58 and 103kcal mol-1 respectively. The enthalpy of formation of HCl would be:
In the reaction $2{H_2}O \rightleftharpoons {H_3}{O^ + } + O{H^ - }$, water is
→