Atomic Notation

How many protons does this isotope of beryllium have?

• 9

• 5

• 4

• 2

Tags

NGSS.HS-PS1-8

What number should be written under the 33 in this isotope notation for sulfur?

• -1

• 17

• 16

• 32

Tags

NGSS.HS-PS1-8

What do these isotopes of hydrogen all have in common? (choose all correct answers)

• they have the same mass number

• they have the same atomic number

• they have the same number of neutrons

• they have the same number of protons

In a correctly written isotope notation what would be located in the "A" position?

• number of neutrons

• atomic number

• number of electrons

• mass number

Which explanation of this isotope notation is correct? (Choose all correct answers.)

• the 12 is the number of protons + neutrons

• the 12 is the number of nucleons

• the 6 tells you there are 6 protons

• the 6 is the atomic number

In the name Carbon-14 the "14" represents the ______.

• mass number

• atomic number

• number of protons

• number of electrons

Tags

NGSS.HS-PS1-8

What is the name of the isotope pictured in the notation above?

• Chlorine Ion

• Chlorine-17

• Chlorine-35

• Chlorine-18

Tags

NGSS.HS-PS1-8

Two atoms of the same element that have different mass numbers are called ________.

• molecules

• isotopes

• variables

• ions

What is the mass number of this atom?

• 13

• 14

• 27

• 40

Tags

NGSS.MS-PS1-1

How many valence electrons does this atom have?

• 2

• 3

• 5

• none

Tags

NGSS.HS-PS1-1