Exploring Atomic Structure and Isotopes

What is the subatomic particle that determines the atomic number of an element?

• Neutron

• Proton

• Electron

• Positron

Which of the following is the correct scientific notation for 0.00056?

What does the mass number of an atom represent?

• Number of protons only

• Number of neutrons only

• Number of protons and neutrons

• Number of electrons

Which of the following is the correct isotope notation for an atom with 6 protons and 8 neutrons?

Tags

NGSS.MS-PS1-1

What is the hyphen notation for an isotope of oxygen with a mass number of 18?

• Oxygen-8

• Oxygen-16

• Oxygen-18

• Oxygen-10

Which subatomic particle is not found in the nucleus of an atom?

• Proton

• Neutron

• Electron

• Both A and B

What is the atomic number of an atom with 17 protons?

• 17

• 34

• 8

• 1

Which of the following best describes isotopes?

• Atoms with the same number of protons but different numbers of neutrons

• Atoms with the same number of neutrons but different numbers of protons

• Atoms with the same number of electrons but different numbers of protons

• Atoms with different numbers of electrons and protons

• 12

• 11

• 23

• 22

Which of the following is the correct scientific notation for 3,200,000?