I’m not really good at balancing chemical equations but I suggest you search Balance Chemical Equation - Online Balancer. This website will help you balance the equations you have. Hope this helps a little
Fluorine
Explanation:
F- has the lowest ionisation energy
Answer:
3 moles of
is needed for
to be fully consumed.
Explanation:
For the balanced equation:
⇒ 
First, find the moles of Na corresponding to the 69g used the general definition of mol:

We observe that the equation is balanced and the stoichiometric ratio between them is 1: 1.
According to this, one mole of Na will react with one mole of Cl.
3 moles of
is needed for
to be fully consumed.
This is valid only if the two elements have the same valence