1.

Elements X, Y and Z have atomic numbers 6, 9 and 12 respectively. Which one : (a) forms an anion (b) forms a cation (c) has four electrons in its valence shell ?

Answer»

Elements X, Y and Z have atomic numbers 6, 9 and 12 respectively. Which one :

(a) forms an anion (b) forms a cation

(c) has four electrons in its valence shell ?



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