NUCLEAR CHEMISTRY (PART 1)

Multiple Choice

How many neutrons are in this isotope of Uranium?

• 235
• 92
• 327
• 143

Multiple Choice

How are these isotopes different?

• Different atomic numbers
• Different number of protons
• Different number of neutrons
• Different number of electrons

Multiple Choice

What happens to the atomic number during alpha decay?

• The atomic number decreases by 4
• The atomic number increases by 1
• The atomic number decreases by 2.
• The atomic number stays the same.

Multiple Choice

Why does an atom undergo beta decay?

• It has too many electrons.
• It has an atomic number greater than 83
• It has more neutrons than protons
• It has more protons than neutrons

Multiple Choice

___________ is a process where an unstable nucleus becomes a more stable nucleus by emitting radioactive radiation

• radioactive decay

• half-life

• nuclear fission

• nuclear fusion

Multiple Choice

Which among the following type of nulei is the most common in nature?

• Even-Even

• Even-Odd

• Odd-Even

• Odd-Odd

Multiple Choice

Thorium-232 decays and emits gamma ray. which of the following is true about gamma ray?

I. Gamma ray is type of electromagnetic wave

II. Gamma ray is neutral

III. Gamma ray does not have energy

• I. and II.

• I. and III.

• II. and III.

Multiple Choice

Nuclear energy is energy released from a ______ during nuclear reactions

• fast-moving proton

• fast-moving neutron

• fast-moving electron

• nucleus