MCQ
Under normal condition which of the following electronic configuration is able to form dipositive ion
- A$[Ar]\,4{s^1}$
- B$[Ne]\,2{s^2}3{p^6}$
- ✓$[Ne]\,3{s^2}$
- DNone of these
✓
Answer
Correct option: C.
$[Ne]\,3{s^2}$
c
$(c)Mg$ has only two electrons in the $3s$-orbital and hence its $I.E.$ is lowest, i.e. it has the maximum tendency to form di-positive ions.
$(c)Mg$ has only two electrons in the $3s$-orbital and hence its $I.E.$ is lowest, i.e. it has the maximum tendency to form di-positive ions.
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
Element having highest $I.P.$ value is
→ Correct statement about $C$ and $D$ is
→$C{H_3} - C \equiv C - C{H_3}\xrightarrow{{{H_2}/Pd - BaS{O_4}}}$ $A\xrightarrow{{B{r_2}/CC{l_4}}}C$
$C{H_3} - C \equiv C - C{H_3}\xrightarrow{{Na/Liq.\,N{H_3}}}$ $B\xrightarrow{{B{r_2}/{H_2}O}}D$
$1000\,gms$ aqueous solution of $CaC{O_3}$ contains $10\,gms$ of carbonate. Concentration of the solution is .......... $ppm$.
→Match list- I with list-II
Choose the correct answer from the options given below:
→| List- I | List- II |
| (A) $\left[ Ni ( Cl )_4\right]^{-2}$ | (i) $5.92 B . M$. |
| (B) $\left[ CO \left( C _2 O _4\right)_3\right]^{-3}$ | (ii) $1.73 B . M$. |
| (C) $\left[ FeF _6\right]^{-3}$ | (iii) 0 B.M. |
| (D) $\left[ Mn ( CN )_6\right]^{-4}$ | (iv) 2.82 B.M. |
In which of the following process least energy is required ?
Identify products of the given reactions
In reaction $A + 2B$ $ \rightleftharpoons $ $2C + D$, initial concentration of $B$ was $1.5\, times$ of $[A]$ , but at equilibrium the concentrations of $A$ and $B$ became equal. The equilibrium constant for the reaction is
→${C_2}{H_5} - C \equiv C - {C_2}{H_5}\xrightarrow{{Na(liq.\,N{H_3})}}(A)\xrightarrow{{B{r_2}/CC{l_4}}}(B)$
→Correct statement regarding $B$ product?
The enzyme ptylin used for the digestion of food is present in
The electronic configuration of four elements $L, P, Q$ and $R$ are given the brackets
→$L(1s^2, 2s^2 2p^4); Q(1s^2, 2s^2 2p^6, 3s^2 3p^5)$
$P(1s^2, 2s^2 2p^6, 3s^1); R(1s^2, 2s^2 2p^6, 3s^2)$
The formulae of ionic compounds that can be formed between these elements are