Covalent compounds generally have low boiling and melting points, and are found in all three physical states at room temperature. Covalent compounds do not conduct electricity; this is because covalent compounds do not have charged particles capable of transporting electrons.
Answer:
SI, The International System of Units is a scientific method of expressing the magnitudes or quantities.
- amount of substance (mole)
- time (second)
- length (metre)
- mass (kilogram)
- electric current (ampere)
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