3. one atom of silicon can properly be combined in a compound with a. one atom of chlorine. b. three atoms of hydrogen. c. two atoms of oxygen. d. four atoms of calcium.

C :2 atoms of Oxygen can probably join 1 Silicon Atom

a.metals can become magnetic if they have many spinning electrons that create magnetic fields.d.only some metals are attracted by magnets; these metals are called ferromagnetic.

d.wrapping an insulated wire around a metal with ferromagnetic properties and applying an electric current.