MCQ
Electronic configuration of ${H^ - }$ is
- A$1{s^0}$
- B$1{s^1}$
- ✓$1{s^2}$
- D$1{s^1}\,2{s^1}$
✓
Answer
Correct option: C.
$1{s^2}$
c
(c) Electronic configuration of ${H^ - }$ is $1{s^2}$. It has $2 $ electrons in extra nuclear space.
(c) Electronic configuration of ${H^ - }$ is $1{s^2}$. It has $2 $ electrons in extra nuclear space.
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
When $3d$ orbital is complete, the new electron will enter the
→What is the enthalpy change for, $2H_2O_2(l) \to 2H_2O(l) + O_2(g)$ if heat of formation of $H_2O_2 (l)$ and $H_2O (l)$ are $-188$ and $-286\, kJ/mol$ respectively? ............. $\mathrm{kJ/mol}$
→$pH$ of a resulting solution prepared by mixing $100\, ml$ $0.1\, M\, HCl$ and $200\, ml$ $0.05\, M\, NaOH$ is
→A metal chloride contains $55.0 \%$ of chlorine by weight.$100\,mL$ vapours of the metal chloride at $STP$ weigh $0.57\,g$. The molecular formula of the metal chloride is $...$.(Given : Atomic mass of chlorine is $35.5\,u$ )
→The total number of cyclic structural as well as stereo isomers possible for a compound with the molecular formula $\mathrm{C}_5 \mathrm{H}_{10}$ is
→The major product of the following reaction is
The $\text{F}-\text{B}-\text{F}$ bond angle in $\ce{BF_3}$ molecule is :
→If the concentration of lead iodide in its saturated solution at ${25\,^o}C$ be $2 \times {10^{ - 3}}$ moles per litre, then its solubility product is
→The chemical system that is non-aromatic is
Which of the following molecules does not possess a permanent dipole moment