1. The law that "the physical and chemical properties of elements are periodic functions of their atomic weights" was given by   Bohr   Moseley   Mendeleev   Lothar Meyer   Hint Half-n-half Clue   2. The horizontal rows in a periodic table are called   Periods   Atomic Structures   Lanthanides   Groups   Half-n-half Clue   3. Elements in the same group have similar   atomic radii   atomic masses   atomic numbers   chemical properties   Half-n-half Clue   4. The law that "the properties of elements are periodic functions of their atomic numbers" was given by   Moseley   Linus Pauling   Mendeleev   Heisenberg   Half-n-half Clue   5. The first noble gas in the periodic table is   Hydrogen   Neon   Helium   Argon   Half-n-half Clue   6. Mercury is a   Lanthanide   Metal   Noble Gas   Non metal   Half-n-half Clue   7. Elements on the extreme left side of the periodic table are   Transition Elements   Metalloids   Metals   Non Metals   Half-n-half Clue