Nuclear Symbol Protons Neutron Electron

Atomic number=

• number of neutrons
• atomic mass
• protons
• electrons+protons

Mass Number is--

• the number of protons + neutrons
• the number of protons
• the number of electrons +protons +electrons
• the same as atomic number

Tags

NGSS.HS-PS1-8

How many protons does He have?

• 4
• 2
• 6
• 0

Tags

NGSS.HS-PS1-1

The top number in this isotope notation is

• the mass number
• the atomic number
• the atomic mass
• the neutron number

The bottom number in this isotope notation is

• the mass number
• the atomic number
• the atomic mass
• the neutron number

Tags

NGSS.HS-PS1-8

Which is the correctly written isotope in hyphen notation:

• Carbon Twelve
• Carbon-12
• 12 C 6
• ¹²C₆

How many neutrons does Copper have?

• 63
• 29
• 34
• 92

What is the atomic number for an element with three protons?

• 2
• 1
• 3
• 6

What is the number of protons that the element in this image contain?

• 14
• 7
• 15
• 18

Tags

NGSS.MS-PS1-1

How many protons does this isotope of titanium have?

• 48
• 22
• 26
• 70