What group represents the alkaline, alkali, halogens, noble gases, and transition metals elements?

1 answer:

4 0

Alkaline metal-group 1
Alkaline earth metals-group 2
halogens=group 7
noble gases-group 8 or o
transition metals are the actinides and the lactanides below the periodic table

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Express each of the following in standard form.

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If the half-life of a radionulide is 1 month, what percent remains after 4 months?

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Answer:

6.25% of the original amount

Explanation:

half-life means that half is gone for every certain period of time. Because the half life is 1 month, only half of the 'radionulide' is left every month.

after 1 month= 50%

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Answer:

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$\frac{PV}{T}$
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Answer:

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Explanation:

Could I have branliest , heart, and 5 stars

Thanks!

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