(a). Write the electron arrangement in (i) a magnesium atom, and (ii) an oxygen atom.
(b). How many electrons are there ini the valence shell of (i) a magnesium atom, and (ii) an oxygen atom?
(c) Show on a diagram the transfer of electrons between the atoms in the formation of MgO.
(d) Name the solvent in which ionic compounds are generally soluble.
(e). Why are aqueous solutions of ionic compounds able to conduct electricity?

How many electrons are there in valence shell of Mg atom?

How many electrons are there in the outermost shell of sodium atom?

How many electrons can be present in the valence shells of metal atoms and non-metal atoms?

(a). Write down the electron arrangement in (i) a magnesium atom, and (ii) a chlorine atom. (b). How many electrons are there in the valence shell of (i) a magnesium atom, and (ii) a chlorine atom? (c). Show the formation of magnesium chloride from magnesium and chlorine by the transfer of electrons. (d) State whetehr magnesium chloride will conduct electricity or not. give reason for your answer. (e). Why are covalent compounds generally poor conductors of electricity?

Number of electrons present in the penultimate shell of magnesium atom.

Explain how the electrons are arranged in the shells of a potassium atom.

How many valence electrons are in chlorine atom.

The number of electrons in the valence shell of an atom cannot be ...... .

(a) what is the electronic configuration of (i) a sodium atom, and (ii) and oxygen atom? (b) what is the number of outermost electrons in (i) a sodium atom, and (ii) and oxygen atom? (c) show the formation of Na_(2)O by the transfer of electrons between the combining atoms. (d) why are ionic compounds usually hard? (e) How is it that ionic compounds in the solid state do not conduct electricity but they do so when in molten state?