3.1.2.1 relative atomic + molecular mass

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Last updated 6:03 PM on 4/14/26
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5 Terms

1
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define relative atomic mass

the average mass of an atom (of an element) divided by 1/12 of the mass of one atom of carbon-12

2
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define relative molecular mass

the average mass of a molecule divided by 1/12 of the mass of one atom of carbon-12

3
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what is the Mr known as for ionic compounds?

relative formula mass

4
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some substances are diatomic, what does this mean?

it means that these substances exist as molecules with two atoms

5
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give 7 examples of diatomic substances

H₂ N₂ F₂ O₂ I₂ Cl₂ Br₂ (Have No Fear Of Ice Cold Beer)