How many protons, neutrons, & electrons in Helium?

Question

I am doing my science exrta credit and I just wanted to make sure that there are 2 protons, 2 electrons, and 2 neutrons in an atom of helium. Is that corrct?

Answer 1

Helium No of protons =No. of electrons= Atomic No. = 2
No. of Neutrons = atomic mass(4) - Atomic No.(2) = 2

Protons= 2
Electrons=2
Neutrons= 2

Answer 2

by definition, an atom with two protons is called helium. to balance the charge (an element should have no net charge), there must also be two electrons. the number of neutrons in an atom of helium can vary. these are called isotopes of helium. try doing a search on helium-3 to learn about an isotope of helium that does not contain 2 neutrons.

Answer 3

For extra-extra credit you could look up what an alpha particle is and compare it.

Its not as unrelated as you might think.

**Just remembered Helium can also be found in the isotope Helium-3 which means only one neutron but I suspect that's beyond the level of your course.

Answer 4

That is correct.

Helium is a colorless, odorless, tasteless chemical element, the least reactive of the nearly inert noble gases of the periodic table. Its boiling and melting points are the lowest among the elements; except in extreme conditions, it exists only as a gas. At temperatures near absolute zero, it is a superfluid, a nearly frictionless phase of matter with unusual properties.

Answer 5

helium's atomic number is 2.
that means 2 pro's and 2 elec's.
the atomic weight i9s verrrrrry close to 4 which means on average there are 2 neut's, so yes.
chemistry is cool, but physics is way cooler

Answer 6

OF COURSE correct ur smart heluim is colorless and has 2 proton 2 neutrons and 2electrons

Answer 7

yes that is correct for the most common isotope of helium.

Answer 8

Yep...gold star.

Answer 9

look on the periodic table
[duh]