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aleksandr82 [10.1K]
3 years ago
10

What property of an atom determines its general reactivity

Chemistry
1 answer:
mario62 [17]3 years ago
3 0
The number of electrons in the outermost shell of an atom determines its reactivity. EX: noble gases have a low reactivity because they have a full electron shell, and don't need any more outermost ones.
EX: halogens are highly reactive because they readily gain an electron to fill their outermost shell
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sertanlavr [38]

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A sample contains 16 mg of polonium-218. After 12 minutes, the sample will contain 1.0 mg of polonium-218. What is the half life
mariarad [96]

Answer:

Half-life = 3 minutes

Explanation:

Using the radioactive decay equation we can solve for reaction constant, k. And by using:

K = ln2 / Half-life

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Ln[A] = -kt + ln [A]₀

Where:

[A] could be taken as mass of polonium after t time: 1.0mg

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<h3>Half-life = 3 minutes</h3>

5 0
3 years ago
600.0 mL of air is at 20.0 Celsius. What is the volume of the same air at 60.0 Celsius
REY [17]

Answer:

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?

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