alejandramenchaca alejandramenchaca

09-12-2014
Chemistry

Answered

what does the number next to isotopes signify?

Answer :

09-12-2014

It is an approximation of its mass number. Each isotope of an element has a different mass number.

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maniacpokemon43 maniacpokemon43

10-12-2014

The number next to the isotope is the mass number- They all have different masses because they have different numbers of neutrons, but the same amount of protons (Remember protons + neutrons = mass)

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