Question

35.
Atoms of seven elements A, B, C, D, E, F and G have a different number of electronic
shells but have the same number of electrons in their outermost shells. The elements
A and C combine with chlorine to form an acid and common salt respectively. The
oxide of element A is a liquid at room temperature and is a neutral substance, while
the oxides of the remaining six elements are basic in nature. Based on the above
information answer the following questions.
5
(a) What could the element A be?
(b) Will elements A to G belong to the same group of the periodic table? Give
reason.
(c) Write the formula of the compound formed by the reaction of element A with
oxygen.
(d) Write the formula of the compound formed when element C combines with
chlorine.
(e) What would be the ratio of the number of combining atoms in a compound
formed by the combination of element A with carbon
​

Answer 1

Answer:

a) hydrogen

b) same group

c) A20/ H20

d) H2O

e) 4:1

Explanation:

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