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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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Classify these properties of the metal lithium as physical or chemical. Physical Chemical light enough to float on water silvery
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The psychical properties do no change the composition of the lithium metal.

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3 years ago
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Can one of you guys help me get this?
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3 years ago
Hello need help nitrogen is chemically insert gas why give reason need explanation (人*´∀`)。*゚+​
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Answer:

Nitrogen is inert because its p-subshell is half-filled due to it has maximum exchange energy. Thus it is exists in stable form as like inert gas and it form triple bond (N≡N). N2 molecules is very stable and its dissociation energy is 225kcal/mol.

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2 years ago
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