Question 3 of 10 The box shows the element helium as it appears in the
periodic table.
2
He
Helium
4.0
Which list gives the correct numbers of subatomic particles for a neutral
atom of helium?
A. Two protons, two neutrons, two electrons
B. Two protons, two neutrons, four electrons
C. Four protons, four neutrons, four electrons
D. Two protons, four neutrons, six electrons

How does a sample of helium at 15 degree celsius compare to a sample of helium at 215 k? a) the helium at 15 degrees celsius has a higher average kinetic energy that the sample at 215 k. b) the helium at 15 degrees celsius has lower nuclear energy that the sample at 215 k. c) the helium at 15 degrees celsius has slower- moving atoms that the sample at 215 k. d) the helium at 15 degrees celsius has smaller atoms than the sample at 215 k.