$\frac{12}{6}C$  What is the 12 represent

• mass number (n+p)

• proton/atomic number

• element symbol

• number of neutrons

 $\frac{12}{6}C$  What is the 6 represent

• mass number (n+p)

• proton/atomic number

• element symbol

• number of neutrons

 $\frac{12}{6}C$  What is the C represent

• mass number (n+p)

• proton/atomic number

• element symbol 

• number of neutrons

 $\frac{235}{92}X$  What is element X

• Nobium

• Uranium

How many neutrons does an Oxygen-19 isotope have?

• 19

• 8

• 11

• 10

How many protons does this isotope of titanium have?

• 48

• 22

• 26

• 70

Tags

NGSS.MS-PS1-1

A neutral atom of the isotope ²⁶₁₂Mg would consist of

• 12 protons, 26 neutrons

• 26 protons, 12 neutrons

• 26 protons, 14 neutrons

• 12 protons, 14 neutrons

Tags

NGSS.MS-PS1-1

How many protons are in the nucleus of the element shown?

• 19

• 9

• 10

• 28

Tags

NGSS.MS-PS1-1

What does the symbol _-1⁰e represent

• alpha
• beta
• gamma
• the zero element

Tags

NGSS.MS-PS1-1

What is the symbol for an alpha particle?

• ⁴₂He
• ⁰_-1e
• ⁰₊₁ e
• ¹₀n

Tags

NGSS.HS-PS1-8