Consider the following elements
B C F Cl N O
If x,y and z are the number of elements having more electron affinity `(Ea_(1))` than nitrogen, the number of elements having ionisation energy more than that of Na and the number of elements having electronegativity more than (or) almost equal to N respectively, find `x+y+z`.
Fill your answer as sum of digit (excluding decimal places) till you get the single digit answer.