58.9k views
1 vote
What is the period number in which helium is found

User Dreza
by
4.4k points

2 Answers

4 votes

Answer:

period 1 and group 18 or 8A on the righthand side of the table.

Step-by-step explanation:

User John Maclein
by
4.4k points
3 votes

Answer:

Helium is the second element on the periodic table. It is located in period 1 and group 18 or 8A on the righthand side of the table. This group contains the noble gases, which are the most chemically inert elements on the periodic table. Each He atom has two protons and usually two neutrons and two electrons.

Step-by-step explanation:

thoughtco.com

User Fouad Boukredine
by
4.7k points