Isotopes and Radioactive Decay

What is the meaning of isotope?

• Elements with same mass number but different proton number

• Elements with same nucleon number but different proton number

• Elements with different nucleon number and different proton number

• Elements with different mass number but same proton number

Tags

NGSS.HS-PS1-8

Which are true for isotope

• Same proton number

• Same nucleon number

• Same mass number

Tags

NGSS.HS-PS1-8

Which are true for isotope?

• Different proton number

• Different mass number

• Different nucleon number

Above shows a radioactive decay of Radium-226 to Radon-222, what kind of decay is this?

• Alpha

• Beta

• Gamma

Tags

NGSS.HS-PS1-8

The equation above shows cobalt-60 decay into nickel-60, what kind of radioactive decay is this?

• Alpha

• Beta

• Gamma

Tags

NGSS.HS-PS1-8

Which of these describes an alpha particle

• Physically same like a proton atom

• Physically same like an electron atom

• Physically same like a helium atom

• Physically same like a neutron atom

Tags

NGSS.HS-PS1-8

The reaction above shows a chain radioactive decay. How many α and β particles were produced?

• 1 α and 3 β

• 2 α and 3 β

• 3 α and 2 β

• 3 α and 1 β

Tags

NGSS.HS-PS1-8

Which of the following radioactive radiation has the highest speed?

• α particles

• β particles

• γ ray

Which of the following radioactive radiation has the highest mass?

• α particles

• β particles

• γ ray

Tags

NGSS.HS-PS1-8

Which of the following radioactive radiation has no mass?

• α particles

• β particles

• γ ray