1. 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   Hint Half-n-half Clue   2. Mercury is a   Non metal   Lanthanide   Noble Gas   Metal   Half-n-half Clue   3. Elements on the extreme left side of the periodic table are   Metalloids   Transition Elements   Non Metals   Metals   Half-n-half Clue   4. Elements at the extreme right of the periodic table are   Halogens   Transition Metals   Noble Gases   Alkali Metals   Half-n-half Clue   5. Which element has the atomic number 8?   Nitrogen   Lithium   Helium   Oxygen   Half-n-half Clue   6. The Law of Octaves was given by   Bohr   Mendeleev   John Newlands   Dobereiner   Half-n-half Clue   7. The horizontal rows in a periodic table are called   Groups   Atomic Structures   Periods   Lanthanides   Half-n-half Clue