Question

Which is the elements with the biggest atom in group 1?​

Answer 1

francium

Atomic radii vary in a predictable way across the periodic table. As can be seen in the figures below, the atomic radius increases from top to bottom in a group, and decreases from left to right across a period. Thus, helium is the smallest element, and francium is the largest.

Answer 2

Explanation:

Second ionization energy decreases. Second ionization energy is much greater than the first ionization energy for each element

Key Concepts.

Trends: Decreasing First Ionisation Energy largest

Electronegativity highest

Group 1. Elements name. lithium

symbol Li

Trends: Increasing atomic number