Differentiate between metal and non-metal on the basis of their chemical properties.
Which metals do not corrode easily ?
Explain the meanings of malleable and ductile
$(i)$ Write the electron-dot structures for sodium. oxygen and magnesium.
$(ii)$ Show the formation of $Na _{2} O$ and $MgO$ by the transfer of electrons.
$(iii)$ What are the ions present in these compounds ?
Give reasons : Platinum, gold and silver are used to make jewellery.