How are coronary heart disease and Type 2 diabetes similar? They can both be cured with medication.
Treatment for both diseases involves surgery.
A healthy diet can prevent both diseases.
They can both be prevented with proper vaccination.

Elements in group viiia (also known as group 18, or the noble gases) have similar properties because they all have a. the same number of electron shells b. full octets c. the same number of valence electrons d. the same number of electrons needed to fill their octet