(a) Give the electronic configurations of sodium and chlorine. (b) Write the electron-dot structures for sodium and chlorine atoms. (c) Describe the formation of sodium chloride from sodium and chlorine by the transfer of electrons. What changes take place in the electronic configurations of sodium and chlorine during the formation of sodium chloride? (d) Write any two properties of ionic compounds.

Write the electron dot structures of sodium, oxygen and magnesium.

(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?

Write the electron-dot structure for sodium and chlorine atoms. How do these form a chemical bond? Name the type of bond so formed. Why does a compound so formed have high melting point?

(i) Write the electron-dot structures for sodium, oxygen and magnesium. (ii) Show the formation of Na_(2)OandMgO by the transfer of electrons.

Give the electronic distribution in magnesium atom and magnesium ion how do these electronic configruation differ?

(a). Write down the electronic configuration of (i) Sodium atom, and (ii) Chlorine atom. (b). How many electrons are there in te outermost shell of (i) a sodium atom, and (ii) a chlorine atom? (c). Show the formation of NaCl from sodiuum and chlorine atoms by the transfer of electron(s). (d). Why has sodium chloride a high melting point? (e) Name the anode and the cathode used in the electrolytic refining of impure copper metal.

(a) In the electrorefining of impure copper metal, what are used as cathode and anode ? (b) Show the formation of MgCl_(2) from magnesium and chlorine atoms.

(i) Write electrondot structures for magnesium and oxygen. ltBrgt (ii) show the formation of MgO by the transfer of electrons. ltBrgt (iii) . What are the ions present in this compound?

(i) Write the electron-dot structures for sodium, oxygen and magnesium. (ii) Show the formation of Na_2O and MgO by the transfer of electrons. (iii) What are the ions present in these compounds ?