Question

You have the mythical metal element 'X' that can exhibit variable valency 1, 2 and 5.
Which of the following are not the correct chemical formulae for the compound
formed by the combination of “X” with different radicals?
I. XPO4
II. X2SO4
IV X3NO3
III. XSCIO4
(A) Only II
(B) II and III
(C) 1, III and IV
(D) II and IV
frustas a minture of isotopes of digt​

Answer 1

c part is the answer of this question

Answer 2

The correct answer is option (C) I, III and IV.

Explanation:

• XPO₄, X₃NO₃ and XSCIO₄ are not the correct chemical formulae for the compound formed by the combination of “X” with different radicals.
• In XPO₄, X₃NO₃ and XSCIO₄, valencies of X -ClO₄⁻¹ and -NO₃⁻¹ are wrong.
• Some elements have more than one valency.
• They can exhibit variable valency.
• For example, copper, tin, iron and mercury can exhibit variable valency.
• Hence, the correct answer is option C i.e I, III and IV.