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andre [41]
3 years ago
15

Which group of elements readily loses two electrons to form a compound?

Chemistry
1 answer:
nexus9112 [7]3 years ago
8 0
The alkaline earth metals (the second group) because their ion charge is +2
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svetlana [45]

It will take 5.2 years to decay.

The half life of cobalt-60 is 5.2 years. The half life is the time taken for the mass of the substance to decrease by a half.

here, the amount of remaining substance is 50%,

so, (\frac{1}{2} )^{n} = 0.5

n. log (0.5) = log (0.5)

n = 1

So it would take 1 half lives to decay this much, which is 1 x 5.2 which is 5.2 years.

what do you mean by radioactive decay ?

The process through which an unstable atomic nucleus loses energy via radiation is known as radioactive decay, also known as nuclear decay, radioactivity, radioactive disintegration, or nuclear disintegration. A material that has unstable nuclei is considered as radioactive.

Learn more about decay here:-

brainly.com/question/13853996

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7 0
2 years ago
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Answer:

8. c

9. e

10. k

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Explanation:

8 0
3 years ago
Explain how you can convert from the number of representative particles of a substance to moles of that substance.
Scrat [10]

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stellarik [79]

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Explanation:

this is the answer

4 0
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What is the valency of hydroxide​
Simora [160]

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As it has the formula OH-.

It has valancy 1.

<em><u>hope</u></em><em><u> </u></em><em><u>it helps</u></em><em><u>.</u></em><em><u>.</u></em>

4 0
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