(i) Energy needed to remove an electron from an atom in gaseous state
(ii) R has a largest atomic radius
Therefore the electron is easily lost
(iii) Reacts vigorously with water producing gas bubbles that give the hissing sound and
propels the metal
The metal floats on water as it is light
(iv) 2Q(s) + H2O(l)----->2QOH(aq) + H2(g)
maurice.mutuku answered the question on October 15, 2019 at 10:36
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