Atomic Structure Review

What is the electron configuration for Phosphorus in the ground state?

• 2-8-5

• 2-8-4

• 2-5

• 2-4

Tags

NGSS.HS-PS1-1

Atoms of the same element that have different masses are classified as

• Ions

• Isotopes

• Isomers

• Nucleons

A tiny but very dense, positively charged portion of the atom that holds most of the atomic mass

• Principal Energy Levels

• Electron Cloud

• Orbitals

• Nucleus

Tags

NGSS.HS-PS1-8

A positively charged ion is called a(n)_______.

• Cation

• Anion

What is the calculation used to find the number of neutrons in an atom?

• Atomic Number - Atomic Mass = # neutrons

• # protons = # electrons = # neutrons

• Atomic Mass- Atomic Number = # neutrons

• Mass Number - Electrons = # neutrons

Term that refers to the nucleus and all of the electrons, except those in the valance (outer) shell is

• Kernel

• Quanta

• Charged Nuclei

• Orbital

Tags

NGSS.HS-PS1-8

An ion with 7 protons, 8 neutrons, an a charge of -3 has an atomic number of?

• 15

• 7

• 8

• 4

Tags

NGSS.MS-PS1-1

How many neutrons does this sodium atom have? (Use the image to help you)

• 23

• 11

• 12

• 34

Tags

NGSS.MS-PS1-1

The modern model of the atom shows that electrons are

• orbiting the nucleus in fixed paths

• located in a solid sphere covering the nucleus

• combined with neutrons in the nucleus

• found in regions called orbitals

What is the total number of neutrons in in the nucleus of an atom of carbon-13

• 6

• 19

• 13

• 7

Tags

NGSS.HS-PS1-8