8.5A Atoms

What is the total number of protons, electrons and neutrons in oxygen, O, atom that has the mass number of 16?

• 8

• 16

• 24

• 31

Tags

NGSS.MS-PS1-1

What is the difference between the number of electrons in an atom of oxygen, O, and the number of electrons in an atom of hydrogen, H?

• 9

• 8

• 7

• 1

Tags

NGSS.MS-PS1-1

An atom has 3 protons, 4 neutrons, and 3 electrons. What is the charge of the atom’s nucleus?

• +4

• +3

• −4

• −3

Tags

NGSS.MS-PS1-1

An atom of a certain element has 11 electrons, and a mass number of 23. This element is very reactive in room temperature. How many neutrons are in this atom?

• 11

• 12

• 33

• 23

Tags

NGSS.MS-PS1-1

How many protons, electrons and neutrons are present in an atom of carbon, C, with the mass of 12?

• 12 protons, 12 electrons, 12 neutrons

• 6 protons, 12 electrons, 6 neutrons

• 12 protons, 6 electrons, 12 neutrons

• 6 protons, 6 electrons, 6 neutrons

Tags

NGSS.MS-PS1-1

What is the mass of sodium (Na) atom that has 11 neutrons?

• 11

• 23

• 22

• 12

Tags

NGSS.MS-PS1-1