MCQ
The electronic configuration of chromium is
- A$[Ne]3{s^2}3{p^6}3{d^4},4{s^2}$
- ✓$[Ne]3{s^2}3{p^6}3{d^5},4{s^1}$
- C$[Ne]3{s^2}3{p^6},4{s^2}4{p^4}$
- D$[Ne]3{s^2}3{p^6}3{d^1},4{s^2}4{p^3}$
✓
Answer
Correct option: B.
$[Ne]3{s^2}3{p^6}3{d^5},4{s^1}$
b
(b) $3d$ subshell filled with $5 $ electrons (half-filled) is more stable than that filled with $4$ electrons. $1,\,4s$ electrons jumps into $3d$ subshell for more sability.
(b) $3d$ subshell filled with $5 $ electrons (half-filled) is more stable than that filled with $4$ electrons. $1,\,4s$ electrons jumps into $3d$ subshell for more sability.
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
Identify disproportionation reaction.
i. $CH _4+2 O _2 \longrightarrow CO _2+2 H _2 O$
ii. $CH _4+4 Cl _2 \longrightarrow CCl _4+4 HCl$
iii. $2 F_2+2 OH ^{-} \longrightarrow 2 F+ OF _2+ H _2 O$
iv. $2 NO _2+2 OH ^{-} \longrightarrow NO _2^{-}+ NO _3^{-}+ H _2 O$
→i. $CH _4+2 O _2 \longrightarrow CO _2+2 H _2 O$
ii. $CH _4+4 Cl _2 \longrightarrow CCl _4+4 HCl$
iii. $2 F_2+2 OH ^{-} \longrightarrow 2 F+ OF _2+ H _2 O$
iv. $2 NO _2+2 OH ^{-} \longrightarrow NO _2^{-}+ NO _3^{-}+ H _2 O$
Identify the state function among the following
The degree of dissociation $(\alpha )$ of $PCl_5$ obeying the equilibrium; is $PC{l_5}\, \rightleftharpoons \,PC{l_3}\, + \,C{l_2}$ related to the pressure at equlibrium by
→Given : $I$ and $II$ are
→General formula of alkenes is
What is the correct order of acidic nature
In the above reaction product $B$ is:
→The acid that results when a base accepts a proton is called
Consider the following statements
→$(I)$ The radius of an anion is larger than that of the parent atom.
$(II)$ The ionization energy generally increases with increasing atomic number in a period.
$(III)$ The electronegativity of an element is the tendency of an isolated atom to attract an electron.
Which of the above statements is/are correct?
Which pair will form the most stable ionic bond?