Aneutral atom of helium has 2 protons and electrons. (enter a whole number.) numerical answers expected! answer for blank 1:

2 electrons

Explanation:

A neutral atom is one in which the number of protons is equal to the number of electrons, which makes it electrically neutral. As the question above does not specify that the atom is not neutral, we can confirm that its electron number is equal to the number of protons.

In these cases, the neutral atoms have no charge, that is, they have a neutral charge. Together with protons, it is part of the atomic nucleus, responsible for almost the entire mass (99.9%) of the atom.

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explanation:

in scientific notation, the value of the  speed of light in a vacuum

  will be written as 2.995 * 10^8. when this value is represented in the form of

  a * 10^b, then, a = 2.995 and b = 8.

the value of the speed of light in a vacuum given above can also be rounded up to approximately 300000000. in this case, the scientific notation will be written as 3 *10^8.