1. Elements in the same group have similar   atomic masses   chemical properties   atomic numbers   atomic radii   Hint Half-n-half Clue   2. The vertical rows in a periodic table are called   Groups   Noble Gases   Alkali Metals   Periods   Half-n-half Clue   3. Elements on the extreme left side of the periodic table are   Transition Elements   Metalloids   Metals   Non Metals   Half-n-half Clue   4. The law that "the properties of elements are periodic functions of their atomic numbers" was given by   Heisenberg   Moseley   Linus Pauling   Mendeleev   Half-n-half Clue   5. The first noble gas in the periodic table is   Argon   Helium   Neon   Hydrogen   Half-n-half Clue   6. The first element in the modern periodic table is   Hydrogen   Oxygen   Lithium   Helium   Half-n-half Clue   7. The Law of Octaves was given by   Bohr   John Newlands   Mendeleev   Dobereiner   Half-n-half Clue