Isotopes

How many protons does this isotope of titanium have?

• 48
• 22
• 26
• 70

Tags

NGSS.HS-PS1-8

How many neutrons does the isotope of lithium have?

• 8
• 3
• 4
• 5

Tags

NGSS.HS-PS1-8

How many neutrons does uranium-235 have?

• 238
• 92
• 146
• 143

Tags

NGSS.HS-PS1-8

What do these isotopes of carbon all have in common?

• neutrons & mass number
• atomic number and neutrons
• atomic number and electrons
• protons, atomic number, and mass number

Tags

NGSS.HS-PS1-8

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

• number of neutrons
• atomic number
• number of electrons 
• mass number

Tags

NGSS.HS-PS1-8

What element is this?  What is the mass number of this atom?

• sodium, 23
• magnesium, 23
• magnesium, 12
• sodium, 11

Tags

NGSS.MS-PS1-1

Calculate the average atomic mass of silver.

• 106.38649amu
• 111.91896amu
• 107.8677amu
• 121

Tags

NGSS.HS-PS1-7

 Copper occurs naturally as Cu-63 and Cu-65. Which isotope is more abundant?

• Cu-63
• Cu-65

Calculate the average atomic mass of element X when 34% of element X exists as X-272 and the remainder exists as X-274.

• 185.64amu
• 273.32amu
• 272.68amu
• 27.33amu

What quantities vary between isotopes of an element?

• protons, electrons, and atomic mass
• protons, electrons, and atomic number
• neutrons and electrons
• neutrons and atomic mass

Tags

NGSS.HS-PS1-8