Trend in Atomic Radius

Q. The correct order of atomic radii among the following elements is:

1. $S<Cl<Ar$
2. $Ar<S<Cl$
3. $Cl<S<Ar$
4. $Ar<Cl<S$

Q.

Which of the following element has the largest atomic radius?

1. $\mathrm{Li}$

2. $\mathrm{Cl}$

3. $\mathrm{Na}$

4. None of above

Q. The correct order of atomic radii for the following species is:
$Na,Li,Rb,$ and $K$

1. 
   $Li>Na>K>Rb$
   
2. 
   $Rb>K>Na>Li$
3. 
   $Na>Li>K>Rb$
4. 
   $Rb>K>Li>Na$

Q. The ionic radii of isoelectronic species $N^{3-},O^{2-}$ and $F^{-}$ in $\stackrel{o}{A}$ are respectively:

1. $1.36,1.40,1.71$
2. $1.36,1.71,1.40$
3. $1.71,1.40,1.36$
4. $1.71,1.36,1.40$

Q.

Which of the following order of radii is correct?

1. $Li<Be<Mg$

2. $H<Li<H^{-}$

3. $O<F<Ne$

4. $Na>F^{-}>O^{-2}$

Q. Ionic radius of:

1. $T{i}^{4+}<M{n}^{7+}$
2. ${}^{35}C{l}^{-}{<}^{37}C{l}^{-}$
3. $K^{+}>C{l}^{-}$
4. $P^{3+}>P^{5+}$

Q.

The correct order of atomic size of $C,N,P,S$ follows the order

1. $N<C<S<P$

2. $N<C<P<S$

3. $C<N<S<P$

4. $C<N<P<S$

Q.

Which one has the highest boiling point?

1. He

2. Ne

3. Kr

4. Xe

Q. The correct order of size of hydrated ions among the following is

1. $L{i}^{+}>N{a}^{+}>K^{+}$
2. $N{a}^{+}>L{i}^{+}>K+$
3. $K^{+}>N{a}^{+}>L{i}^{+}$
4. cannot predict

Q.

On going down a main sub-group in the periodic table (example Li to Cs in IA or Be to Ra in IIA), the expected trend of changes in atomic radius is a

1. Continuous increase

2. Continuous decrease

3. Periodic one, an increase followed by a decrease

4. A decrease followed by an increase

Q. Which of the following species are isoelectronic?

$i\left)Neii\right)O^{2-}iii\left)M{g}^{2+}iv\right)F$

$v\left)A{l}^{3+}vi\right)C{l}^{-}vii\left)Kviii\right)Na$

1. $Ne,O^{2-},M{g}^{2+},A{l}^{3+}$
2. $C{l}^{-},O^{2-},F,A{l}^{3+}$
3. $A{l}^{3+},C{l}^{-},M{g}^{2+},O^{2-}$
4. $Na,M{g}^{2+},C{l}^{-},Ne$

Q. Arrange the following compounds in the increasing orders of their melting point.
$\text{I}.BaC{l}_2$ $\text{II}.SrC{l}_2$ $\text{III}.CaC{l}_2$ $\text{IV}.MgC{l}_2$ $\text{V}.BeC{l}_2$

1. $III<V<I<II<IV$
2. $V<IV<II<I<III$
3. $V<IV<III<II<I$
4. $I<III<V<II<IV$

Q. Select the correct sequence of increasing radius (left to right):

1. $S{e}^{2-},O^{2-},F^{-}$
2. $C{a}^{2+},Ar,K^{+}$
3. $Se,As,Ge$
4. $Fe,F{e}^{2+},F{e}^{3+}$

Q. The increasing order of atomic radii of the following Group 13 elements is:

1. $Al<In<Ga<Tl$
2. $Ga<Al<In<Tl$
3. $Al<Ga<In<Tl$
4. $Al<Ga<T1<In$

Q. Which of the following orders of ionic radii is correctly represented?

AIPMT 2014

Q.

Which of the following ion has the largest size?

1. ${\mathrm{Al}}^{+3}$

2. ${\mathrm{O}}^{-2}$

3. ${\mathrm{Cs}}^{+}$

4. ${\mathrm{F}}^{-}$

Q. Element $Fe$ has two oxidation states $F{e}^{2+}$ & $F{e}^{3+}$, the correct order of radii of these ions will be:

1. $F{e}^{2+}<F{e}^{3+}$
2. $F{e}^{2+}=F{e}^{3+}$
3. $F{e}^{2+}>F{e}^{3+}$
4. $F{e}^{3+}\le F{e}^{2+}$

Q. Which one of the following ions has the highest value of ionic radius?

1. $L{i}^{+}$
2. $B^{3+}$
3. $O^{2-}$
4. $F^{-}$

Q.

The element Z = 114 has been discovered recently. It will belong to which of the following family/group and electronic configuration? [NEET 2017]

1. Halogen family, $\left[Rn\right]5F^{14},6d^{10},7s^2,7p^5$

2. Carbon family, $\left[Rn\right]5F^{14},6d^{10},7s^2,7p^2$

3. Oxygen family, $\left[Rn\right]5F^{14},6d^{10},7s^2,7p^4$

4. Nitrogen family, $\left[Rn\right]5F^{14},6d^{10},7s^2,7p^6$

Q. The Lanthanide Contraction is the result of the poor shielding effect of $5d$ electrons

1. False
2. True

Q.

The correct order of atomic size of $C,N,P,S$ follows the order

1. $N<C<S<P$

2. $N<C<P<S$

3. $C<N<S<P$

4. $C<N<P<S$

Q. The correct sequence which shows decreasing order of the ionic radii of the elements is :

1. $A{l}^{3+}>M{g}^{2+}>N{a}^{+}>F^{-}>O^{2-}$
2. $N{a}^{+}>M{g}^{2+}>A{l}^{3+}>O^{2-}>F^{-}$
3. $N{a}^{+}>F^{-}>M{g}^{2+}>O^{2-}>A{l}^{3+}$
4. $O^{2-}>F^{-}>N{a}^{+}>M{g}^{2+}>A{l}^{3+}$

Q. The ionic radii of isoelectronic species $N^{3-},O^{2-}$ and $F^{-}$ in $\stackrel{o}{A}$ are respectively:

1. $1.36,1.40,1.71$
2. $1.36,1.71,1.40$
3. $1.71,1.40,1.36$
4. $1.71,1.36,1.40$

Q. The species $S^{2-},K^{+},C{a}^{2+},C{l}^{-}$ contain the same number of electrons.
The increasing order of their radii is:

1. $S^{2-}>C{l}^{-}>K^{+}>C{a}^{2+}$

2. $S^{2-}>C{l}^{-}>C{a}^{2+}>K^{+}$

3. $C{l}^{-}>K^{+}>C{a}^{2+}>S^{2-}$

4. $S^{2-}>K^{+}>C{l}^{-}>C{a}^{2+}$

Q. Atomic size of gold is almost the same as that of silver due to:

1. The same crystal structure of silver and gold
2. Almost the same electropositive character of two metals
3. The transition metals contraction in a series
4. The effect of lanthanide contraction

Q. Among $Rb,Sr,Cs,\text{and}Ba,$ which has the highest atomic radii.

1. $Sr$
2. $Rb$
3. $Ba$
4. $Cs$

Q.

The correct order of increasing radii are

1. $B{e}^{+2},M{g}^{+2},N{a}^{\oplus }$

2. $K^{\oplus },C{a}^{+2},S^{-2}$

3. $O^{-2},F^{-},N^{-3}$

4. $S^{-2},O^{2-},A{s}^{3-}$

Q. Lanthanide contraction is responsible for the fact that:

1. $Zr$ and $Y$ have about the same radius
2. $Zr$ and $Nb$ have similar oxidation state
3. $Zr$ and $Hf$ have about the same radius
4. $Zr$ and $Zn$ have the same oxidation state.

Q. Ionic radius of:

1. $T{i}^{4+}<M{n}^{7+}$
2. ${}^{35}C{l}^{-}{<}^{37}C{l}^{-}$
3. $K^{+}>C{l}^{-}$
4. $P^{3+}>P^{5+}$

Q. The correct order of radii is

1. $Na<Li<K$
2. $N<Be<B$
3. $F^{-}<O^{2-}<N^{3-}$
4. $F^{3+}<F{e}^{2+}<F{e}^{4+}$