Question

element: radon
lewis dot symbol of the atom
valence electrons:
rn
lewis dot symbol of the ion
valence electrons:
rn ^0

Explanation:

Step1: Determine valence electrons of Radon atom

Radon is a noble - gas in group 18. Noble - gases have 8 valence electrons. So, the number of valence electrons in a Radon atom is 8. The Lewis dot symbol of the Radon atom has 8 dots around the symbol 'Rn'.

Step2: Consider Radon ion

The image shows a neutral Radon ion [Rn]⁰. Since it is neutral, the number of valence electrons remains 8, and the Lewis dot symbol of the ion also has 8 dots around the symbol 'Rn'.

Answer:

Valence Electrons of the Atom: 8; Lewis Dot Symbol of the Atom: 8 dots around 'Rn'; Valence Electrons of the Ion: 8; Lewis Dot Symbol of the Ion: 8 dots around 'Rn'