Isotopes lab

How many neutrons does the isotope of lithium have?

• 8
• 3
• 5

If a hydrogen atom has 1 proton, 1 electron, and 1 neutron, its atomic number is:

• 1
• 2
• 3

How many protons does this isotope of titanium have?

• 48
• 22
• 26

If a sulfur atom has 16 protons, 16 electrons, and 16 neutrons, its atomic mass is:

• 16
• 32
• 48

What is the name of the pictured isotope?

• Copper-29
• Copper-63
• Copper-34
• CopperWopperHopperBopper

Which of the following are isotopes?

a) ¹⁴ ₇X b) ¹⁴ ₆X c) ¹⁵ ₇X d) ¹⁵ ₈X

• a) and b)

• a) and c)

• c) and d)

• a) and d)

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

How is carbon-12 different from carbon-14?

• They have a different number of protons
• they have a different number of electrons
• they have a different number of neutrons

What do carbon-12 and carbon-14 have in common?

• they have same number of protons
• they have the same number of neutrons
• they have the same atomic mass
• they have the same atomic weight

Isotopes of an element have a different number of...

• Protons

• Neutrons

• Electrons

• Mass