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boyakko [2]
2 years ago
9

How many atoms are there in 5.20 mil of hafnium. Please help due in 1hr

Chemistry
1 answer:
Levart [38]2 years ago
8 0
In 5.70 mol of Hafnium there are 34,326
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Which element does not have the same number of electrons in its outermost shell as the other elements in its group?(1 point)
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A radioactive substance of mass 768g has a half life of 3 years. After how many years does it leave only 6g undecayed?​
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Consider a 100-gram sample of radioactive cobalt-60.
svetlana [45]

It will take 5.2 years to decay.

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here, the amount of remaining substance is 50%,

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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

#SPJ1

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