Reactivity Towards Halogens

Q. Which acid is formed when $Si{F}_4$ reacts with water?

1. $H_{2}S{O}_4$
2. $H_{2}Si{F}_4$
3. $H_{2}Si{F}_6$
4. None of these

Q. The thermal stability order for group 14 halides is:

1. $Ge{X}_2<Si{X}_2<Sn{X}_2<Pb{X}_2$
2. $Si{X}_2<Ge{X}_2<Sn{X}_2<Pb{X}_2$
3. $Pb{X}_2<Sn{X}_2<Ge{X}_2<Si{X}_2$
4. $Si{X}_2<Ge{X}_2<Pb{X}_2<Sn{X}_2$

Q.

Which of the following is/are correct for group 14 elements?

1. The (general) tendency for catenation decreases down the group

2. They all form oxides of the form $E{O}_2$

3. The ability of an element to form p$\pi -$p$\pi$ bond with itself increases down the group

4. The stability of the di-haldies is in the order $C{X}_2<Si{X}_2<Ge{X}_2<Sn{X}_2<Pb{X}_2$

Q.

Stability of ions of $Ge,Sn,andPb$ will be in the order:

1. $G{e}^{2+}<S{n}^{2+}<P{b}^{2+}$

2. $G{e}^{4+}>S{n}^{4+}>P{b}^{4+}$

3. $S{n}^{4+}>S{n}^{2+}$

4. $P{b}^{2+}>P{b}^{4+}$

Q. The correct order of thermal stability of tetrahalides of carbon is:

1. $C{F}_4<CC{l}_4<CB{r}_4<C{I}_4$
2. $C{I}_4<CB{r}_4<CC{l}_4<C{F}_4$
3. $C{F}_4<CC{l}_4<C{I}_4<CB{r}_4$
4. $CB{r}_4<CC{l}_4<C{I}_4<C{F}_4$

Q. Which of the following statements is incorrect regarding the compounds of carbon family elements?

1. The maximum coordination number of carbon in commonly occurring compounds is 4, whereas that of silicon is 6
2. The stability order of group 14 dihalides is $Si{X}_2>Ge{X}_2>Sn{X}_2>Pb{X}_2$
3. The order of boiling points of hydrides of group 14 elements is $C{H}_4<Si{H}_4<Ge{H}_4<Sn{H}_4$
4. $MeSiC{l}_3$ on hydrolysis and subsequent condensation will produce $\left(Me\right)Si{\left(OH\right)}_3$

Q. The C-X bond energy order for the carbon tetra halides is:

1. $C{I}_4>CB{r}_4>CC{l}_4>C{F}_4$
2. $CC{l}_4>CB{r}_4>C{I}_4>C{F}_4$
3. $C{F}_4>CC{l}_4>CB{r}_4>C{I}_4$
4. None of above

Q. Which of the following species is not stable?

1. $[Si{F}_6{]}^{2-}$
2. $[GeC{l}_6{]}^{2-}$
3. $\left[Sn\right(OH{)}_6{]}^{2-}$
4. $[SiC{l}_6{]}^{2-}$

Q. Which of the following can not react directly with halogens under suitable conditions?

1. C
2. Si
3. Ge
4. Pb

Q. The stability of dihalides of Si, Ge.Sn, and Pb increases steadily in the sequence :

1. $Ge{X}_2<Si{X}_2<Sn{X}_2<Pb{X}_2$
2. $Si{X}_2<Ge{X}_2<Sn{X}_2<Pb{X}_2$
3. $Pb{X}_2<Ge{X}_2<Sn{X}_2<Si{X}_2$
4. $Si{X}_2<Ge{X}_2<<Pb{X}_2<Sn{X}_2$