Fill in the blanks I — task. Science State Board, Class 10.

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Answer variants:

antiparticle of electron

Gamma ray

radio iron (

$Fe^{59}$ )

Roentgen

International Commission on Radiological Protection

$3.7 \times{10^{10}}$

1. One roentgen is equal to

disintegrations per second.

2. Positron is an

3. Anemia can be cured by

isotope.

4. Abbreviation of

$ICRP$

is used to measure exposure rate of radiation in humans.

has the greatest penetration power.

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4. Fill in the blanks I