A molecule of $$$\mathrm{SCl}_{2}$$$ contains two $$$\mathrm{S}-\mathrm{Cl}$$$ covalent bonds. (i) Complete the dot-and-cross diagram in Fig. 2.1 to show the arrangement of the outer electrons in a molecule of $$$\mathrm{SCl}_{2}$$$. Use $$$\times$$$ to show electrons from the chlorine atoms. Use $$$\bullet$$$ to show electrons from the sulfur atom. (ii) Predict the shape of, and bond angle in, a molecule of $$$\mathrm{SCl}_{2}$$$ by using VSEPR theory. shape ............................................................................................................................ bond angle ....................................................................................................................

Chemistry

IGCSE&ALevel

CAIE

Exam No：9701_s24_qp_21 Year：2024 Question No：2(b)

Answer:

3.5.1.1 $\mathrm{BF}_{3} \text { (trigonal planar, } 120^{\circ} \text { ) }$

3.5.1.2 $\left.\mathrm{CO}_{2} \text { (linear, } 180^{\circ}\right)$

3.5.1.3 $\mathrm{CH}_{4} \text { (tetrahedral, 109.5°) }$

3.5.1.4 $\mathrm{NH}_{3} \text { (pyramidal, 107°) }$

3.5.1.5 $\mathrm{H}_{2} \mathrm{O} \text { (non-linear, } 104.5^{\circ})$

3.5.1.6 $\mathrm{SF}_{6} \text { (octahedral, 90°) }$

3.5.1.7 $\mathrm{SF}_{6} \text { (octahedral, 90°) }$

3.5.2 predict the shapes of, and bond angles in, molecules and ions analogous to those specified in 3.5.1