1. The vertical rows in a periodic table are called   Groups   Periods   Noble Gases   Alkali Metals   Hint Half-n-half Clue   2. Magnesium has an atomic number of   16   24   10   12   Half-n-half Clue   3. The law that "the properties of elements are periodic functions of their atomic numbers" was given by   Linus Pauling   Heisenberg   Moseley   Mendeleev   Half-n-half Clue   4. The law that "the physical and chemical properties of elements are periodic functions of their atomic weights" was given by   Mendeleev   Moseley   Lothar Meyer   Bohr   Half-n-half Clue   5. The horizontal rows in a periodic table are called   Atomic Structures   Periods   Lanthanides   Groups   Half-n-half Clue   6. Which metal has atomic number 3?   Beryllium   Sodium   Lithium   Boron   Half-n-half Clue   7. Elements in the same group have similar   atomic radii   chemical properties   atomic masses   atomic numbers   Half-n-half Clue