Can you please help it's due very soon

1. bonds

2. covalent

3. pair

4. electrons

5. molecules

6. ionic

7. transfer

8. electrons

9. atoms

10. metallic

11. electrons

12. conductors

13. electricity

14. noble gas

15. ionic compound

16. ionic

17. metallic

Explanation:

Partly my brain and partly Glencoe/McGraw-Hill ©

acid rain does not usually kill trees directly. instead, it is more likely to weaken the trees by damaging their leaves, limiting the nutrients available to them, or poisoning them with toxic substances slowly released from the soil. the main atmospheric pollutants that affect trees are nitrates and sulphates.

metals are good conductor of electricity. it has free electrons on their surface. according to electron pool theory, each atom present in a metal crystal losses all of its valence electron and as a result a pool of free is form. these pool of electrons are free to move and   conduct electricity easily   while making metal as good conductor.

the correct answer is a. the ability of electrons to flow throughout the metal.

if it's not useful, feel free to report for mistake in answer.