MCQ
The outer most shell electronic configuration of transition element is
- A$ns^2\,nd^{1-10}$
- ✓$(n-1)\,d^{1-10}\,ns^{1-2}$
- C$(n-1)\,d^2\,ns^{0-2}$
- D$(n-1)\,d^{1-10}\,ns^2$
✓
Answer
Correct option: B.
$(n-1)\,d^{1-10}\,ns^{1-2}$
b
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
Assign $A, B, C, D$ from given type of reaction.
$N{a_2}{C_2}{O_4} + {H_2}S{O_4}\left( {conc.} \right) \longrightarrow N{a_2}S{O_4} + CO + C{O_2}$
→$B{F_3}$ is used as a catalyst in several industrial processes due to its
→One mole of an ideal monoatomic gas is subjected to changes as shown in the graph. The magnitude of the work done (by the system or on the system) is $...........J$ (nearest integer).
→Given : $\log 2=0.3, \ln 10=2.3$
$(a)$ $Be$ and $Mg$ are alkaline earth metal.
$(b)$ $K^+$ have larger radii than $Ca^{+2}$.
$(c)$ All $d-$ block element are transition elements.
$(d)$ $H^{\circleddash}$ ions is larger than $F^{\circleddash}$.
Incorrect statement is/are
→$(b)$ $K^+$ have larger radii than $Ca^{+2}$.
$(c)$ All $d-$ block element are transition elements.
$(d)$ $H^{\circleddash}$ ions is larger than $F^{\circleddash}$.
Incorrect statement is/are
$STATEMENT$-$1$: Boron always forms covalent bond.
→because
$STATEMENT$-$2$: The small size of $\mathrm{B}^{3+}$ favours formation of covalent bond.
A liquid boils at such a temperature at which the saturated vapour pressure, as compared to atmospheric pressure, is :
$250\, ml$ of a sodium carbonate solution contains $2.65 $grams of $N{a_2}C{O_3}$. If $10 \,ml $ of this solution is diluted to one litre, what is the concentration of the resultant solution (mol. wt. of $N{a_2}C{O_3}=106$)
→The preferred sites of protonation in the following compounds are
Which of the following statements is correct about equivalent weight of $KMn{O_4}$
→Identify $Z$ in the sequence of reactions :
→$CH_3 CH_2 CH=CH_2 \xrightarrow{{HBr/{H_2}{o_2}}}\,Y\,\xrightarrow{{{C_2}{H_5}ONa}}Z$