chapter 4 and 5 - chemical bonding and structures

Question 1

why do atoms combine

Answer 1

to achieve stable electronic configuration by losing, gaining or sharing electrons

Question 2

structure and bonding of ionic compounds

Answer 2

ionic compounds have a giant ionic lattice structure, with strong electrostatic forces of attraction between oppositely charged ions

Question 3

polyatomic ions

Answer 3

ions composed of two or more covalently bonded atoms

Question 4

properties of ionic compounds

Answer 4

high melting and boiling point : ionic compounds have a giant ionic lattice structure, with strong electrostatic forces of attraction between oppositely charged ions. therefore, large amounts of energy is needed to overcome such strong electrostatic forces of attraction

most are soluble in water, insoluble in organic solvents

only conducts electricty in molten or aqueous states, as prescence of mobile ions to act as charge carriers