Question

DIRECTIONS: Use the Word Bank to answer the questions below. For questions 2 and 3 circle the correct choice.

1. Electrons surround the nucleus in defined regions called _________________.

2. The shells further away from the nucleus are ​larger/smaller​ and can hold ​more/less​ electrons.

3. The shells closer to the nucleus are ​larger/smaller​ and can hold ​more/less​ electrons.

4. The ________ shell (closest to the nucleus) can hold a maximum of _____ electrons.

5. Once the first shell is full, the _____ shell begins to fill. It can hold a maximum of ________ electrons.

6. Once the second shell is full, the ______ shell begins to fill.

7. Once the third shell contains _____ electrons, the _______ shell begins to fill.

8. The arrangement of electrons in shells around the nucleus is referred to as an atom's ___________.

Answer 1

Step-by-step explanation:

1. Electrons surround the nucleus in defined regions called orbits.

2. The shells further away from the nucleus are ​larger​ and can hold ​more electrons.

3. The shells closer to the nucleus are ​smaller​ and can hold ​less​ electrons.

4. The closest shell (closest to the nucleus) can hold a maximum of two electrons.

5. Once the first shell is full, the second shell begins to fill. It can hold a maximum of eight electrons.

6. Once the second shell is full, the third shell begins to fill.

7. Once the third shell contains Eighteen electrons, the fourth shell begins to fill.

8. The arrangement of electrons in shells around the nucleus is referred to as an atom's electronic configuration.