Tracer Techniques Part 1

In ___________, unstable nuclei spontaneously decay into stable nuclei.

• Radiation

• Radioactivity

• Release

• Emission

Tags

NGSS.HS-PS1-8

A species of an atom characterized by the number of protons and neutrons in its nucleus and which shows radioactivity is known as a

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NGSS.HS-PS1-8

Those radionuclides that have the same atomic number but different mass number are known as

• Isobars

• Isotones

• Isotopes

• Radioisotopes

Before X-rays were discovered, one of the most popularly studied rays were the

Tags

NGSS.HS-PS4-3

Rontgen conducted his experiments for the discovery of X-rays by using a window made of _________________.

• Iron

• Nickel

• Aluminum

• Copper

For his experiments, Becquerel made use of a mineral of ________.

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NGSS.HS-PS1-8

The characteristics of radioactivity are: -

• It is a nuclear phenomenon

• Atoms undergo spontaneous, uncontrolled, continuous disintegration

• Independent of external factors

• No simultaneous emission of α and β, but emission of α and γ or β and γ possible

Tags

NGSS.HS-PS1-8

________ α N in radioactive decay.

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NGSS.HS-PS1-8

The time required for the disintegration of half the amount of radioactive atoms initially present

• One fourth life

• Two thirds life

• Half life

• t_1/2

t_1/2 = 0.693/_____

Tags

NGSS.HS-PS1-8