Question

4. Select two elements whose electronegativity is almost the same
Li, F, Na, Ne
5. Select the element with the least electron affinity
O, C, Ne, F
5. Select the element with the highest ionisation potential
O, F, Ne.​

Answer 1

Explanation:

4. phosphorus and hydrogen

Answer 2

Answer:

ans -4. Na and Ne

Explanation:

because Na in a metal and there for it does not gain any electron and Ne is a noble gas which neither gains nor looses electron.