Question

francium is in period 7 and group 1 and has an atomic number of 87 and an atomic mass of 87. 2. choose the best answer. how many energy levels does francium have? 7 223 1 87 3. choose the best answer. how many total electrons does francium have? 7 223 1 87

Explanation:

• For the first question: In the periodic table, the period number of an element indicates the number of energy levels it has. Since francium is in period 7, it has 7 energy levels.
• For the second question: In a neutral atom, the number of electrons is equal to the atomic number. Francium has an atomic number of 87, so it has 87 electrons.

Answer:

1. 7
2. 87