QuestionTrue or False? The number of electrons equals the atomic mass?

Studdy Solution

STEP 1

Assumptions1. The atomic mass is the total mass of protons, neutrons, and electrons in an atom. . The number of protons in an atom is equal to the atomic number.
3. The number of electrons in a neutral atom is equal to the number of protons.

STEP 2

Consider the statement "The number of electrons can be determined by the atomic mass."

STEP 3

The atomic mass is the sum of the masses of protons, neutrons, and electrons. However, the mass of an electron is so small compared to the mass of a proton or neutron that it is often ignored in the calculation of atomic mass.
$Atomic\, mass = Number\, of\, protons \\times Mass\, of\, a\, proton + Number\, of\, neutrons \\times Mass\, of\, a\, neutron + Number\, of\, electrons \\times Mass\, of\, an\, electron$

STEP 4

The number of protons in an atom is equal to the atomic number. In a neutral atom, the number of electrons is equal to the number of protons (or the atomic number).
$Number\, of\, electrons = Atomic\, number$

STEP 5

The atomic mass does not provide information about the atomic number. Therefore, the atomic mass cannot be used to determine the number of electrons in an atom.
The statement "The number of electrons can be determined by the atomic mass." is False.

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