Question

Column A

1.
How many protons does the Ra2+ ion have? (The atomic number tells you the number of protons)

2.
How many neutrons does the Ra2+ ion have? (Remember: mass number - atomic number = # neutrons)

3.
How many electrons does the Ra2+ ion have? (Remember: if the ion is positive it has lost electrons. To find the number of electrons, take the atomic number and subtract the charge of the ion.)

Column B
a.314
b.90
c.86
d.226
e.88
f.138

Answer 1

[AI-generated answer — Bot GPT 3.5]

Column A:

1. The Ra2+ ion has 88 protons (atomic number of Ra).
2. The Ra2+ ion has 138 neutrons (mass number minus atomic number).
3. The Ra2+ ion has 86 electrons (atomic number minus charge of +2).

Column B:
a. 314
b. 90
c. 86
d. 226
e. 88
f. 138

Matching the values from Column A to Column B:

1. Protons (88) - e. 88
2. Neutrons (138) - f. 138
3. Electrons (86) - c. 86