1. Mercury is a   Lanthanide   Metal   Noble Gas   Non metal   Hint Half-n-half Clue   2. Elements at the extreme right of the periodic table are   Noble Gases   Transition Metals   Alkali Metals   Halogens   Half-n-half Clue   3. The Law of Octaves was given by   Dobereiner   John Newlands   Bohr   Mendeleev   Half-n-half Clue   4. Elements in the modern periodic table are arranged on the basis of their   Chemical Symbols alphabetically   Atomic Number   Atomic Mass   Boiling Point   Half-n-half Clue   5. The vertical rows in a periodic table are called   Periods   Alkali Metals   Groups   Noble Gases   Half-n-half Clue   6. Elements on the extreme left side of the periodic table are   Non Metals   Transition Elements   Metalloids   Metals   Half-n-half Clue   7. The element with atomic number 6 is   Oxygen   Neon   Carbon   Boron   Half-n-half Clue