Question

4. Name the elements with highest and lowest ioni
energies in first three periods.
​

Answer 1

Answer:

Hydrogen,Sodium and Potassium

✔❤❤✔❤✔❤✔❤✔

Answer 2

Explanation:

ACCORDING TO INTERNET

1. The ionization energy decreases from top to bottom in groups
2. Increases from left to right across a period.
3. Thus, helium has the largest first ionization energy, while francium has one of the lowest.