MCQ
The correct order of radii is
- A$N < Be < B$
- ✓${F^ - } < {O^{2 - }} < {N^{3 - }}$
- C$Na < Li < K$
- D$F{e^{3 + }} < F{e^{2 + }} < F{e^{4 + }}$
✓
Answer
Correct option: B.
${F^ - } < {O^{2 - }} < {N^{3 - }}$
b
(b)Ionic radii decreases significantly from left to right in a period among representative elements.
(b)Ionic radii decreases significantly from left to right in a period among representative elements.
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
The higher concentration of which gas in air can cause stiffness of flower buds?
$O - O$ bond length order in $O _2^{-2}, O _2^{-}, O _3$ and $O _2$ :
→Sulphur in $+3$ oxidation state is present in
→Four diatomic species are listed below. Identify the correct order in which the bond order is increasing in them :
Relative stability of the contributing structures is :
Arrange the following compounds in order of increasing dipole moment.
→(I) Toluene
(II) $m - $dichlorobenzene
(III) $o - $dichlorobenzene
(IV)$p - $dichlorobenzene
The solubility product of sparingly soluble salt $A X_{2}$ is $3.2 \times 10^{-11}$. Its solubility (in $\left. mol / L \right)$ is
→Given below are two statements:
→Statement $(I)$ : Both metal and non-metal exist in $\mathrm{p}$ and $d$-block elements.
Statement $(II)$ : Non-metals have higher ionisation enthalpy and higher electronegativity than the metals.
In the light of the above statements, choose the most appropriate answer from the option given below:
Accepting the definition that an acid is a proton donor, the acid in the following reaction
→$N{H_3} + {H_2}O \to NH_4^ + + O{H^ - }$ is
When $600\; mL$ of $0.2 \;M \;HNO _{3}$ is mixed with $400\; mL$ of $0.1\; M\; NaOH$ solution in a flask, the rise in temperature of the flask is $\dots\;\times 10^{-2}{ }^{0} C$
→(Enthalpy of neutralisation $=57 \;kJ \;mol ^{-1}$ and Specific heat of water $=4.2\; JK ^{-1} g ^{-1}$ ) (Neglect heat capacity of flask)