An element in $+3$ oxidation state has the electronic configuration $[Ar]3d^3$. Its atomic number is
- A$24$
- B$23$
- C$22$
- D$21$
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Similar Questions
When are $d$-block elements considered as transition elements?
Easy
View SolutionWhich ion has the highest ionisation enthalpy?
Match the column-$I$ with column-$II$.
column-$I$ $(\text{Property})$
column-$II$ $(\text{Metal})$
$i$. An element which can show $+8$ oxidation state
$a$. $Mn$
$ii$. $3d$ series element that can show upto $+7$ oxidation state
$b$. $Cr$
$iii$. $3d$ series element with highest melting point
$c$. $Os$
| column-$I$ $(\text{Property})$ | column-$II$ $(\text{Metal})$ |
|---|---|
| $i$. An element which can show $+8$ oxidation state | $a$. $Mn$ |
| $ii$. $3d$ series element that can show upto $+7$ oxidation state | $b$. $Cr$ |
| $iii$. $3d$ series element with highest melting point | $c$. $Os$ |
Medium
View SolutionWhat is enthalpy of atomisation? Explain. $OR$ Write a note on enthalpy of atomisation.
Difficult
View SolutionMatch the elements in List-$I$ with their electronic configurations in List-$II$.
List-$I$ List-$II$ $(1)$ $Ti^+$ $(A)$ $(n-1)d^4ns^2$ $(2)$ $_{30}Zn$ $(B)$ $(n-1)d^{10}ns^1$ $(3)$ $_{24}Cr$ $(C)$ $(n-1)d^2ns^0$ $(4)$ $_{29}Cu$ $(D)$ $(n-1)d^5ns^1$ $(E)$ $(n-1)d^0ns^2$ $(F)$ $(n-1)d^{10}ns^2$
| List-$I$ | List-$II$ |
| $(1)$ $Ti^+$ | $(A)$ $(n-1)d^4ns^2$ |
| $(2)$ $_{30}Zn$ | $(B)$ $(n-1)d^{10}ns^1$ |
| $(3)$ $_{24}Cr$ | $(C)$ $(n-1)d^2ns^0$ |
| $(4)$ $_{29}Cu$ | $(D)$ $(n-1)d^5ns^1$ |
| $(E)$ $(n-1)d^0ns^2$ | |
| $(F)$ $(n-1)d^{10}ns^2$ |
Easy
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