Size of Atoms and Ions

Q. One of the following metals forms a volatile carbonyl compound and this property is taken advantage for its extraction. This metal is

1. Cobalt
2. Iron
3. Nickel
4. Tungsten

Q. Zinc, Cadmium and mercury shows the property of

1. Typical elements
2. Transition elements
3. Rare elements
4. Normal elements

Q. The correct order of ionic radii for $Y^{3+},E{u}^{3+},L{a}^{3+},L{u}^{3+}$

1. 
2. 
3. 
4. 

Q. The correct increasing order of ionic radii of the following $C{e}^{3+},L{a}^{3+},P{m}^{3+}$ and $Y{b}^{3+}$ is:

1. $Y{b}^{3+}<P{m}^{3+}<C{e}^{3+}<L{a}^{3+}$
2. $C{e}^{3+}<Y{b}^{3+}<P{m}^{3+}<L{a}^{3+}$
3. $P{m}^{3+}<L{a}^{3+}<C{e}^{3+}<Y{b}^{3+}$
4. $Y{b}^{3+}<P{m}^{3+}<L{a}^{3+}<C{e}^{3+}$

Q.

The f-block elements are called as _______ .

1. Noble gases

2. Representative elements

3. Inner transition elements

4. Transition elements

Q. A reduction in atomic size with increase in atomic number is a characteristic of elements of

1. High atomic masses
2. d-block
3. f –block
4. Radioactive series

Q. What are ionic compounds? Give example.

Q.

Why does the melting point of elements decrease down a group eventhough the density increases?

Q. The elements of the three transition series of the d - block are given below:
$\begin{array}{cccccccccc}& & & & & & & & & \\ Sc& Ti& V& Cr& Mn& Fe& Co& Ni& Cu& Zn\\ Y& Zr& Nb& Mo& Tc& Ru& Rh& Rd& Ag& Cd\\ La& Hf& Ta& W& Re& Os& Ir& Pt& Au& Hg\end{array}$
In any transition series, as we move form left to right, the d - orbitals are progressively filled and their properties vary accordingly.
Which element do you expect to have the highest melting point?

1. La
2. W
3. Os
4. Pt

Q. The elements of the three transition series of the d - block are given below:
$\begin{array}{cccccccccc}& & & & & & & & & \\ Sc& Ti& V& Cr& Mn& Fe& Co& Ni& Cu& Zn\\ Y& Zr& Nb& Mo& Tc& Ru& Rh& Rd& Ag& Cd\\ La& Hf& Ta& W& Re& Os& Ir& Pt& Au& Hg\end{array}$
In any transition series, as we move form left to right, the d - orbitals are progressively filled and their properties vary accordingly.
Which element do you expect to have the smallest atomic radius?

1. Sc
2. Zn
3. La
4. Hg

Q. What is lanthanoid contraction?

Q. In which of the following method of purification, metal is converted to its volatile compound which is decomposed to give pure metal?

1. Heating with stream of carbon monoxide
2. Distillation
3. Liquation
4. Heating with iodine

Q. Which of the following have highest ionic radii

1. $C{r}^{3+}$
2. $M{n}^{3+}$
3. $C{o}^{3+}$
4. $F{e}^{3+}$

Q.

The ionic species having largest size is?

1. }\)

2. }\)

3. }\)

4. }\)

Q. The atomic number of non transition element of $6\text{d}$ series of ${}^{\prime }{d}^{\prime }$ block elements ____________.

1. 112
2. 111
3. 110
4. 80