question 8\n5 pts\nwhich of the following elements belong to the same group on the periodic table?\nsodium…

question 8\n5 pts\nwhich of the following elements belong to the same group on the periodic table?\nsodium and hydrogen\nboron and calcium\nhydrogen and helium\npotassium and chlorine

question 8\n5 pts\nwhich of the following elements belong to the same group on the periodic table?\nsodium and hydrogen\nboron and calcium\nhydrogen and helium\npotassium and chlorine

Answer

Brief Explanations:

Elements in the same group of the periodic table have the same number of valence electrons. Sodium (Na) and hydrogen (H) are both in Group 1. Sodium is an alkali - metal and hydrogen is a non - metal but they have 1 valence electron each. Boron is in Group 13 and calcium in Group 2. Hydrogen is in Group 1 and helium in Group 18. Potassium is in Group 1 and chlorine in Group 17.

Answer:

Sodium and hydrogen