* Who is the scientist that predicted the modern periodic table?
Isaac Newton
Albert Einstein
Nikola Tesla
Dimitri Mendeleev

Which of the following statements is not true? • a. covalent compounds have low melting and boiling points. • ob. covalent bonds between atoms of a compound are relatively weak compared to bonds between molecules. • c. covalent bonds occur between nonmetals. • d. covalent compounds are often gases or liquids.

Why is permeable soil best for plants that need a lot of drainage?

Find the mass, in grams, of 5.00*10^23 molecules of f2