NaF is not covalent, but ionic, as Na and F are on opposite sides of the periodic table.
Cora and Mellie's hands are grasped strongly together.
The author's tone is about the author's feelings towards the story of the poem.
<u>Explanation</u>:
- The author's tone and attitude is all about the feelings of the author and she expresses it more lightly. So she uses the pronouns we and our. She thinks to share her feelings to the people so she uses it.
- She is conveying her feelings in a understandable way to the readers so that readers can understand that. So she is introducing her topic in this way.
