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Chapter 24: 24.124 CP (page 1107)

Were organisms a billion years ago exposed to ionizing radiation than similar organisms today? Explain.

Short Answer

Expert verified

The presence of radioactive nuclei increases exposure.

Step by step solution

01

Definition of Ionizing radiation

Ionizing radiation is a type of energy that removes electrons from atoms and molecules in a variety of materials, including air, water, and living tissue.

02

Determining ionizing radiation

Organisms billions of years ago were more exposed to natural cosmic ray radiation. Because our atmosphere is still developing, there is a greater amount of uranium and other radioactive nuclei.

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Most popular questions from this chapter

Question:What is the specific activity (in $Ci / g$ ) if 1.65 mgof an isotope emits $1.56 \times 10^{6} α$ particles per second?

If $6 .40 \times 10^{- 9} mol$ of $^{176} W$ emits $1 .07 \times 10^{15} β^{+}$ in $1 .00 h$ , what is the decay constant?

Determine the missing species in these transmutations, and write a full nuclear equation from the shorthand notation:

_{${(a)}^{10} B(α,n)$}

$\begin{array}{l} {(b)}^{28} {Si(d,)}^{29} {P(wheredisaduteron,}^{2} H^{+}) \\ {(c)(α,2n)}^{244} Cf \end{array}$

Many scientists at ﬁrst reacted skeptically to Einstein’s equation,. $E = {mc}_{}^{2}$ Why?

A decay series starts with the synthetic isotope ₉₂²³⁹U. The first four steps are emissions of a particle $β^{-}$ , another $β^{-}$ , an $α$ particle, and another $α$ . Write a balanced nuclear equation for each step. Which natural series could start by this sequence?

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