MCQ
Which cation has smallest radius
- A${K^ + }$
- B$N{a^ + }$
- C$L{i^ + }$
- ✓$B{e^{2 + }}$
✓
Answer
Correct option: D.
$B{e^{2 + }}$
d
(d) Highest the nuclear charge smallest the atomic size as well as radius also.
(d) Highest the nuclear charge smallest the atomic size as well as radius also.
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
$STATEMENT$-$1$: Boron always forms covalent bond.
→because
$STATEMENT$-$2$: The small size of $\mathrm{B}^{3+}$ favours formation of covalent bond.
A schematic plot of versus inverse of temperature for a reaction is shown below The reaction must be
Maximum bond angle is present in :-
$\Delta {H^o}$ combustion of $C_4H_{10}(g)$ is $-2650\, kJ\, mol^{-1}$ the amount of heat evolve at constant pressure that can be obtained by burning $5.8\, kg$ of $C_4H_{10}$ is approx
→The state of hybridisation of central atom in dimer of $BH_3$ and $BeH_2$ is
→Match List - 1 with List - II:
Choose the correct answer from the options given below:
→| List-I (Complexes) | List-II (Types) |
| (a) $\left[ Co \left( NH _3\right)_5 CN \right] Cl _2$ | (i) ionisation isomerism |
| (b) $\left[ Cr \left( NH _3\right)_6\right]\left[ Co ( CN )_6\right]$ | (ii) coordination isomerism |
| (c) $\left[ Co \left( NH _3\right)_5\left( SO _4\right)\right] Br$ | (iii) linkage isomerism |
The osmotic pressure of solution increases, if
Consider the following compounds in the liquid form :
→$O _2, HF , H _2 O , NH _3, H _2 O _2, CCl _4, CHCl _3, C _6 H _6, C _6 H _5 Cl \text {. }$
When a charged comb is brought near their flowing stream, how many of them show deflection as per the following figure?
For the reaction$A(g) + 3B(g) \rightleftharpoons 2C(g)$ at $27\,^oC$, $2\, moles$ of $ A$, $4\, moles$ of $B$ and $6\, moles$ of $C$ are present in a $2\, litre$ vessel. If $K_C$ for the reaction is $1.2$, the reaction will proceed in
→Which of the order for ionisation energy is correct