Question
The valency shell of calcium contains
✓
Answer
d
(d) Valence shell configuration for $IIA$ group elements is : $n{s^2}$
(d) Valence shell configuration for $IIA$ group elements is : $n{s^2}$
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
Compound $(X)$ is
→The major product formed when $1, 1, 1-$ trichloro propane is treated with aqueous potassium hydroxide is
→On passing $C$ ampere of electricity through a electrolyte solution for $t$ second, $m$ gram metal deposits on cathode. The equivalent weight $E$ of the metal is
→A solid $XY$ kept in an evacuated sealed container undergoes decomposition to form a mixture of gases $X$ and $Y$ at temperature $T$. The equilibrium pressure is $10\, bar$ in the vessel. $K_p$ for this reaction is
→The number of structural isomers for $\mathrm{C}_6 \mathrm{H}_{14}$ is
→The number of incorrect statement/s from the following is
→$A$. The successive half lives of zero order reactions decreases with time.
$B$. A substance appearing as reactant in the chemical equation may not affect the rate of reaction
$C$. Order and molecularity of a chemical reaction can be a fractional number
$D$. The rate constant units of zero and second order reaction are $mol\, L ^{-1} s ^{-1}$ and $mol ^{-1} Ls ^{-1}$ respectively
Assertion : $[Co(NO_2)_3(NH_3)_3]$ does not show optical isomerism.
→Reason : It has a plane of symmetry.
In the following reaction sequence, the major product $Q$ is
→The photoelectric effect occurs only when the incident light has more frequency than a certain minium:
The molecule in which hybrid $MOs$ involve only one $d-$orbital of the central atom is
→