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Margarita [4]
3 years ago
11

The time required for one-half of the atoms from a sample of a radioactive substance to decay is called its _____.

Chemistry
2 answers:
Orlov [11]3 years ago
8 0
A.) half - life of a radioactive substance is defined as the time during which concentration of the substance becomes half the initial value.
Angelina_Jolie [31]3 years ago
5 0

Answer:

The answer is A. Half-life Hope this helps!

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O has a 2- oxidation change so

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So the oxidation number of chlorine is 7 in this case

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