here is my solution to the questions

1. CHEMISTRY
ASSIGNMENT

2. • 1. metallic , ( option B)
• 2. HF, (option A)
• 3. Hydrogen bonding, (option A)
• 4. Increase, option B
• 5. sharing of electron between the metal atoms, option C
• 6. Dative covalent only, option D
• 7. 𝑋𝑌2 option B
• 8. Each participating atom contributes one electron option C
• 9. KCl, option D
• 10. 𝑀3 𝑁 option C
• 11. Hydrogen bond, option E
• 12. 3 and 2, option C