Question

You have the mythical metal element ‘X’ that can exhibit variable value 1,2 and 5. Which of the following are not the correct chemical for formulae for the compounds of by the combination of the “X” with different radicals ? 

A) XPO₄ 

B) X₂ SO₄ 

C) X₅ClO₄ 

D) X₃ NO₃ 

1) Only B 

2) B and C 

3) A,C and D 

4) B and D

Answer 1

3) A,C and D / 4) B and D