Chemical Bonding

1. Using the elements ₁₉X³⁹, ₁₇Y³⁷ , ₁₆Z³² , ₇R¹⁴ show the electron dot diagram the molecule formed between

• Atoms of Y

• Atoms of X and Z

• Atoms of R

• Atoms of X and Y

2. Using elements ₄A and ₇B show the compound formed between A and B by atomic diagram

3. Using elements ₁₇X and ₂₀Y show the compound formed between X and Y by electron dot diagram

4. Using elements ₂₀P and ₈Q show the compound formed between P and Q by electron dot diagram

5. Which one is more reactive ? and why ? ₉F or ₁₇Cl

6. Which one is more reactive ? and why ? Na or Na⁺

7. Complete the following ionic equations.

• A --> A³⁺

• B^2- --> B

• C --> C^-

• D²⁺ --> D³⁺

• E³⁺ --> E²⁺

8. A, B, C are three atoms with atomic numbers 14, 16 and 3. Which one of this is (a) a metal (b) non metal (c ) will form anion (d) will form cation (e) a reducing agent (f) oxidising agent

9. A metal X ( 19) burns in Chlorine to produce a white solid chloride Y. By means of a diagram show the formation of Y

10. Using the elements W ( atomic number 7), X (8) Y (9) and Z(11) write the formula of the compounds formed between the following pairs of elements and indicate the type of bonding present

• W and X

• X and X

• W and Z

• Y and Y

11. Given below is a list of substances. Which of these substance (1) conducts electricity in solid state (2) conducts electricity in aqueous solution (3) consists of ions only (4) is soluble in water (5) contains a double covalent bond (6) contains a triple covalent bond (7 ) is monoatomic (8) is diatomic (9) is a saturated hydrocarbon (10) is unsaturated hydrocarbon

• Ammonia

• Argon

• Aluminium

• Oxygen

• Nitrogen

• Calcium Bromide

• Methane

• Ethyne

• Ethylene

• Propane

• Glucose

• Carbon Dioxide

12. Using elements X ( atomic number = 12 ) and Y ( atomic number 16 ) show how each forms an ion and what type of ions. Which of the two X or Y is getting oxidised and which is getting reduced by this process

13. Draw the electron dot diagram of two co-ordinate covalent compounds

14. Tick the ionic compounds from the list

• KI CaH₂ Hydrogen Chloride Hydrochloric Acid Chloroform

• MgO AlCl₃ Pure Water Acidulated Water C₃H₈ K₂S Al₂O₃