Question

state the three reasons of the following facts first
sulphur in non metal second magnesium is the metal

Answer 1

I) Sulphur is non-metal because Sulphur is non-metal because (1) Number of electrons in the valence shell is more than 4 i.e., 6 unlike metals which have valence electrons less than 4. (2) It has tendency to accept electrons. (3) It is non-lustrous. (4) It burns in air to form sulphur dioxide which is an acidic oxide as non-metals react with air to form acidic oxide. S + O2 ? SO2 II) Magnesium is metal becauseMagnesium is metal because (1) Number of valence electrons is less than 4 i.e., 2 unlike non-metal which have valence electrons more than 4. (2) It has tendency to lose electrons as the ionisation energy is low. (3) It exhibits lusture. (4) It burns in air to form MgO which is a basic oxide as metals form basic oxide with air. 2Mg + O2? ? 2MgO

Answer 2

Answer:

1-Because it consist with 3physical properties listed for non metal. Its a poor conductor of heat and electricity because electron not free to move

2-Mg has low ionization that is easily denotes electron. Its a good conductor of heat and electricity.