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Flashcards in Radioactivity Deck (13):
1

The majority of the atom's mass

Nucleus

2

Nuclides are to co-exists in a state of peacul tranquility

Stable isotopes

3

Elements exhibits a degree of nuclear instability

Radioactive

4

Isotopes that spontaneously emit radiation

Radio-isotopes

5

Process in whic unstable atomic nucleus loses energy by emitting radiation

Radioactive decay

6

Father of radioactivity

Henri Bequerel

7

Emits very energetic radiation

Uranium

8

Marie and pierre curie discovered

Radium
Polonium

9

1 Radon = 1 Ci =

3.7 x 10^10 DPS or Bq

10

1 Bq =

2.7 x 10^-11 Ci

11

Sorces of radioactivity

Primordial
Cosmogenic
Human produced

12

Before the creation of the earth

Primordial

13

Result of cosmic ray interaction

Cosmogenic