The formula Mg3A2 is missing the nonmetal which has been labeled as mystery element "A" a) Which group of the periodic table must the mystery element "A" belong to?
b) What is the mystery elements charge (sign and number)?

Which change to the system wood cause the freely-moving piston to lower?

What is the difference between covalent bonds and ionic bonds? covalent bonds involve the sharing of electrons between atoms; ionic bonds involve the electrical attraction between charged atoms. covalent bonds involve the transfer of electrons between charged atoms; ionic bonds involve the sharing of electrons between atoms. covalent bonds involve the sharing of pairs of electrons between atoms; ionic bonds involve the sharing of single electrons between atoms. covalent bonds involve the sharing of electrons between atoms; ionic bonds involve the sharing of protons between charged atoms.

How much would you need to weigh out in order to have 0.2moles of magnesium atoms?