Answer the following questions:-
(a)the atomic number of an element X is 3identify the group and the period in which elemens X is present.
(b) three elements X,Y,Z have consecutive atomic numbers if element X is a noble gas what will be the symbol for the ion of element Z in its compound?
(c)what will be the formula of the compound formed between the element X and Z

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Solution

a) Atomic number = 3
element = Lithium
group = 1 and period = 3

b) X, Y and Z have consecutive atomic number. If X is a noble gas then Z will be a alkaline earth metal. Symbol for its ion will be Z²⁺

c) Since X is a noble gas and Z is an alkaline earth metal, so no such compounds formed between them.

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