PDF chapter test TRY NOW
standard atomic weight | four | three | \(1.008\) |
neutrons | mass number | same, different | atoms |
oxygen | two | atomicity | \(22400\) |
artificial transmutation | homo | one | hetero |
1.
The most abundant element in human body is __________.
2.
The number of boron isotopes found in nature is __________.
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