Question

Define the following with an example each
() Electronic Configuration
(ii) Matter
(ui) Variable valency
(iv) Valence electron
(v) Positive electrovalency​

Answer 1

Methane is an odorless, colorless, flammable gas. It is used primarily as fuel to make heat and light. It is also used to manufacture organic chemicals. Methane can be formed by the decay of natural materials and is common in landfills, marshes, septic systems and sewers.