2)i)J ii)Q iii)X iv)R. 2ii)electrovalent iii)14 iv)x2R v)J vi)Y 2b)atomic orbital is a component of an element which electrons are filled, they can be S,P,D or F orbital…They can either be singly filled or double 2bii)-all atoms are made up of matter,-atoms consist of discrete particles,-atoms of different element have different weight….2iiII). atom are divisible,- atoms are made up of different elements 2biii) sodium chloride is a crystal, it has high melting pt. It is a white solid silvery metal….2c)

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