Nuclear Chemistry 1

What does the 4 in ⁴₂He represent?

• the mass number

• the atomic number

• the number of protons

• the number of neutrons

What does the 101 in ²⁵⁶₁₀₁Md represent?

• the mass number

• the atomic number

• the nuclide number

• the number of neutrons

Tags

NGSS.HS-PS1-8

What does the 218 in polonium-218 represent?

• the mass number

• the atomic number

• the mass defect

• the neutron number

The spontaneous disintegration of a nucleus into a slightly lighter and more stable nucleus, accompanied by emission of particles, electromagnetic radiation, or both, is

• nuclear fusion.

• nuclear radiation.

• radioactive decay.

• nuclear fission.

Tags

NGSS.HS-PS1-8

Which of the following forms of radiation has the greatest penetrating power?

• alpha particles

• beta particles

• gamma rays

• positrons

Alpha particles are

• electrons.

• helium nuclei.

• electromagnetic waves.

• neutrons.

Tags

NGSS.HS-PS1-8

Beta particles are

• electrons.

• helium nuclei.

• electromagnetic waves.

• neutrons.

Tags

NGSS.HS-PS1-8

Which of the following is the symbol for an alpha particle?

• ¹₁H

• ¹₀n

• ⁰₋₁e

• ⁴₂He

Which of the following is the nuclear symbol for a beta particle?

• ¹₁H

• ⁰₁n

• ⁰₋₁e

• ⁴₂He

Tags

NGSS.HS-PS1-8

Which of the following generally have the lowest penetrating ability?

• alpha particles

• beta particles

• gamma rays

• All have the same penetrating ability.