Answer:
[tex]Sr^{+} (g)-->Sr^{2+} (g)+e[/tex]
Explanation:
Ionization is removal of most loosely bound electron from an isolated gaseous atom.
First ionization is the removal from a neutral atom.
The equation for it is
a) [tex]Sr(g)-->Sr^{+} (g)+e[/tex]
Second ionization is the removal from a monopositive ion of the atom.
The equation is:
[tex]Sr^{+} (g)-->Sr^{2+} (g)+e[/tex]
In ionization there is no addition of electron thus all other equations are cannot be correct.
