ISOTOPES

Front

Isotope

Back

An atom with different amounts of neutrons

Front

Which atom has 4 neutrons? Options: Li-6, Li-7, Li-8, they have the same # of neutrons

Back

Li-7

Front

Composition of a neutral atom of the isotope ²⁶₁₂Mg

Back

12 protons, 14 neutrons, 12 electrons

Front

What is the difference between Neon-20 and Neon-22?

Back

They have different numbers of neutrons.

Front

There are two primary isotopes found in any sample of copper: copper-63 and copper-65. The isotope ⁶⁵Cu composes 69.2% of the sample and ⁶³Cu comprises the other 30.8%. Based on this data, what is the atomic mass of copper?

Back

64.4 amu

Front

The atomic mass of an isotope is equal to the number of ______ in an atom.

Back

Protons + Neutrons

Front

How many neutrons does the isotope of lithium have?

Back

5

Front

How many neutrons does a Sodium 24 isotope have?

Back

13

Front

A carbon isotope consists of 6 protons, 6 electrons and 8 neutrons. What is the mass number for this isotope?

Back

14

Front

Rubidium has two common isotopes, ⁸⁵Rb and ⁸⁷Rb. If the abundance of ⁸⁵Rb is 72.2% and the abundance of ⁸⁷Rb is 27.8%, what is the average atomic mass of rubidium?

Back

85.6 amu