Recall from unit 3, the mass number is the average of ALL of the element's isotopes and it accounts for the protons and neutrons found in the atom's nucleus. It is a decimal number since it is a "weight average" of the masses known. (5 points)

Question

Put responses in the correct input to answer the question. Select a response, navigate to the desired input and insert the response. Responses can be selected and inserted using the space bar, enter key, left mouse button or touchpad. Responses can also be moved by dragging with a mouse.
Manganese, Mn Tin, Sn Bromine, Br Rubidium, Rb Neon, Ne

79.90 amu, 118.7 amu] , 85.47 amu, 54.94 amu, 20.18 amu.

Answer 1

To fill in the mass numbers for each element, we can match the elements to their corresponding atomic masses:

1. Manganese, Mn - Not provided in the options, but the atomic mass of Mn is approximately 54.94 amu.
2. Tin, Sn - 118.7 amu
3. Bromine, Br - 79.90 amu
4. Rubidium, Rb - Not provided in the options, but the atomic mass of Rb is approximately 85.47 amu.
5. Neon, Ne - 20.18 amu

Based on your list, the correct element to mass pairs appear to be:

• Manganese, Mn: 54.94 amu
• Tin, Sn: 118.7 amu
• Bromine, Br: 79.90 amu
• Rubidium, Rb: 85.47 amu
• Neon, Ne: 20.18 amu

Please ensure you place each mass value with the corresponding element in the correct inputs according to the question's requirements.