The two atoms will always have the same atomic number if they have the same

• Number of neutrons

• Number of protons

• Number of nucleons

• Mass number

As an Na atom forms an Na+ ion, the number of protons in its nucleus

• Decreases

• Remains the Same

• Increases

Which atom contains exactly 15 protons?

• sulfur - 32 (S)

• phosphorus-32 (P)

• oxygen-15 (O)

• nitrogen-15 (N)

Which atom contains exactly 7 protons?

• sulfur - 32 (S)

• phosphorus-32 (P)

• oxygen-15 (O)

• nitrogen-15 (N)

Tags

NGSS.MS-PS1-1

What is the total number of protons in an atom of Argon-38? (Ar)

• 18

• 36

• 35

• 17

Tags

NGSS.MS-PS1-1

The nucleus of an atom consists of 9 protons and 10 neutrons. The total number of electrons present in a neutral atom of this element is

• 10

• 9

• 8

• 7

The nucleus of an atom consists of 8 protons and 6 neutrons. The total number of electrons present in a neutral atom of this element is

• 2

• 6

• 8

• 14

Tags

NGSS.MS-PS1-1

An ion with 11 protons, 12 neutrons, and a charge of 1+ has an atomic number of

• 10

• 11

• 12

• 13

Tags

NGSS.MS-PS1-1

An ion with 5 protons, 6 neutrons, and a charge of 3+ has an atomic number of

• 8

• 6

• 5

• 11

A particle of matter contains 8 protons, 8 neutrons, and 8 electrons. This particle must be a

• positively charged oxygen ion

• neutral nitrogen atom

• positively charged nitrogen ion

• neutral oxygen atom

Tags

NGSS.MS-PS1-1