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Atomic Symbols, Atomic Numbers, and Mass Numbers


Learners read definitions of atomic symbols, atomic numbers, and mass numbers and then answer questions about the number of neutrons, protons, and electrons in select elements.

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Posted by Robben Nacimento on 3/20/2015 12:58:49 AM Votes 0.00 Thumps Up Thumps Down

Why is the letter A used to denote mass number?

Posted by Ashutosh Karn on 2/12/2016 7:58:44 AM Votes 0.00 Thumps Up Thumps Down

Why does symbol of mass number is given A

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I love the format - I would like to see more exercises.

Posted by Dee Shonkwiler on 10/16/2011 2:03:00 PM Reply

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