Question

An element 'X' has 7a valence electrons:

i) To which group will the element 'X' belong?
ii) Name the second element which belongs to that group.
Write the symbol of that element.
iv) Write the formula of the compound when it combines with potassium.​

Answer 1

Answer:

1.chlorine in group no 17

2.bromine or flourine or iodine

4.potasium chloride kcl