Question

mass number
most of the mass of an atom comes from protons and neutrons. the total number of protons plus neutrons in an atom is called the mass number. if you know the atomic number and mass number of an atom, then you can determine the number of neutrons in the atom.
representing atoms the composition of any atom can be represented in shorthand notation using the elements chemical symbol, atomic number, and mass number.
mass number is 22
atomic number is 10
the chemical symbol for neon is ne.
neon - 22 you can also represent atoms by using the name of the element and the mass number.
mass number and neutrons you can calculate the number of neutrons from the atomic number and the mass number of an atom. for example, lets calculate the number of neutrons in neon.
number of neutrons = mass number - atomic number
number of neutrons = 22 - 10 = 12
12 sep use mathematics complete the table by identifying the atomic number and mass number for each atom and then using those data to determine the numbers of protons, neutrons, and electrons.
composition of atoms
atom atomic number mass number protons electrons neutrons
$_{11}^{23}na$
$_{16}^{32}s$
silver - 108 47
gold - 197 79

Explanation:

Step1: Recall atomic - related rules

The atomic number is equal to the number of protons. In a neutral atom, the number of electrons is equal to the number of protons. The number of neutrons = mass number - atomic number.

Step2: Analyze $_{11}^{23}Na$

Atomic number = 11, so number of protons = 11. Since it's neutral, number of electrons = 11. Mass number = 23, number of neutrons = 23 - 11=12.

Step3: Analyze $_{16}^{32}S$

Atomic number = 16, so number of protons = 16. Since it's neutral, number of electrons = 16. Mass number = 32, number of neutrons = 32 - 16 = 16.

Step4: Analyze silver - 108

Atomic number = 47, so number of protons = 47. Since it's neutral, number of electrons = 47. Mass number = 108, number of neutrons = 108 - 47 = 61.

Step5: Analyze gold - 197

Atomic number = 79, so number of protons = 79. Since it's neutral, number of electrons = 79. Mass number = 197, number of neutrons = 197 - 79 = 118.

Answer:

Atom	Atomic number	Mass number	Protons	Electrons	Neutrons
$_{16}^{32}S$	16	32	16	16	16
silver - 108	47	108	47	47	61
gold - 197	79	197	79	79	118