Isotopes

How many neutrons does the isotope of lithium have?

• 8
• 3
• 4
• 5

Tags

NGSS.HS-PS1-8

How many protons does this isotope of titanium have?

• 48
• 22
• 26
• 70

Tags

NGSS.HS-PS1-8

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

How many neutrons in C-14?

• 6
• 7
• 14
• 8

Tags

NGSS.HS-PS1-8

12 protons and 13 neutrons

• Mg-12

• Mg-13

• Mg-25

• Mg-24.305

Tags

NGSS.HS-PS1-8

^{The photo above shows the isotopic notation for which isotope?}

• Carbon 12
• Carbon 13
• Carbon 14
• Carbon 15

Tags

NGSS.MS-PS1-1

If X is the symbol for an element, which of the following two symbols represent isotopes of the same element?

I. ⁷⁷₃₅X II. ⁷⁷₃₃X III. ⁸¹₃₇X IV. ⁸¹₃₅ X

• I and II

• III and IV

• I and IV

• I and III

To figure out the mass of an atom based on its subatomic particles you would add ______ & ________.

• Protons & Electrons

• Protons & Neutrons

• Neutron & Electrons

Tags

NGSS.MS-PS1-1

Which number identifies the number of protons

• 12

• 24.305

• 24

• 24-12

Tags

NGSS.HS-PS1-1

In the picture, what does 3 represent?

• atomic number

• number of protons

• number of electrons in a neutral atom

• all of these are correct