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pakiusap lang po kung di alam ang sagot wag na sumagot wag din po nonsense ang sagot
pakiusap lang po kung di alam ang sagot wag na sumagot wag din po nonsense ang sagot
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Answer:
1. B.
- As fluorine is highly electronegative than other atoms and it has the smallest size too, sodium fluoride is more ionic than other molecules.
- Ammonia is a covalent compound because the bond is formed between one nitrogen and three hydrogen atom by the sharing of electrons.
2. A.
- And the bond between carbon and oxygen, carbon and hydrogen, is a polar covalent bond, with a significant electronegativity difference. As ethanol has shared covalent bonds, it can be classified as a covalent compound.
- Ionic compounds, such as sodium chloride (NaCl), are formed by a transfer of electrons that creates ions. Ions exert electrostatic force on each other, which forms ionic bonds. The hydrogen and oxygen atoms in a water molecule, however, are bonded by sharing electrons rather than by transferring them.
3. B.
- Covalent compound: a small amount of heat energy is required to overcome the weak intermolecular forces of attraction during melting and boiling
- As said in the problem, "after leaving the cloth for a little amount of time"
These answers are confirmed correct.