Which number is equal to the number of protons in the atom?

Answer 1

Nothing in an atom has the same number of electrons. Instead, all atoms are composed of protons (+1 charge) and electrons (-1 charge), and most atoms also have neutrons

(no charge). The protons and neutrons are held together in a small cluster at the center of the atom called the nucleus and the number of protons identifies the type of atom (hydrogen, carbon, oxygen, etc.) The electrons move about the nucleus in volumes of space called orbitals and for neutral atoms the number of protons and electrons is the same. If the number of protons and electrons is not the same the atom has a net positive or negative charge and we call it an ion.

Answer 2

The number of electrons is equal to the number of protons. (Actually, electrons are not found in nucleus. They actually orbit nucleus.)

Answer 3

That is correct, assuming the substance is a neutral atom.

Answer 4

The number of electrons in an element are always the same, if they aren't it becomes an ion.

Answer 5

atomic number = number of protons = number of electrons (in a neutral atom)

Answer 6

The atomic number of an element equals the number of protons in the nucleus of each atom of the element.

Answer 7

The number of electrons in an atom is equal to the atomic number.

Answer 8

These atoms are called isoelectronic.

Answer 9

Other atoms of the same element, or ions of nearby elements.