Chapter 19, Problem 90AP

Interpretation Introduction

(a)

Interpretation:

To Supply the missing particle and state the radioactive type of ${{}^{\text{238}}}_{\text{92}}\text{U }{\to }^{\text{4}}{}_{\text{2}}\text{He +?}$.

Concept Introduction:

The radioactive decay is the decay of the alpha, beta emission etc. The decay of these type of particles produces the stable nucleus. The nuclear transformation is the chain reaction.

Chain reaction means the reaction proceed in continuity till it will form the stable nucleus.

Alpha decay is the decay in which mass number is decreases by 4 and atomic number is decreases by 2.

Beta decay is the decay in which atomic number increases by 1 and no change in the mass number.

Interpretation Introduction

(b)

Interpretation:

ToSupply the missing particle and state the radioactive type of ${{}^{\text{234}}}_{\text{90}}\text{Th}{\to }^{\text{234}}{}_{\text{91}}\text{Pa + ?}\text{.}$.

Concept Introduction:

The radioactive decay is the decay of the alpha, beta emission etc. The decay of these type of particles produces the stable nucleus. The nuclear transformation is the chain reaction.

Chain reaction means the reaction proceed in continuity till it will form the stable nucleus.

Alpha decay is the decay in which mass number is decreases by 4 and atomic number is decreases by 2.

Beta decay is the decay in which atomic number increases by 1 and no change in the mass number.