Chemistry Crossword Project! Please help?

A natural attraction
(8 letters)

Discoverer of the noble gases (6 letters

Refers to elements of the sixth period ( 4 letters)

Elements that are poor conductors of heat and electricity and are electronegative

27. To be in the form of gas (7 letters)

34. Rare earths of the seventh period ( 8 letters)

hint: 6th letter of 34 is "i"

37. He used X rays to determine atomic numbers ( 6 letters)

Hint for the discoverer of nobel gases...begings with and "r"

12. Those elements characterized by the belated filling of the next-to-the-outermost energy levels ( 10)

33. A series of rare earths of the sixth peroid.

37. A class of elements that show luster, conduct heat and electric current, and are electropositive

38. Elements that have certain metal properties but are classed as nonmetals.

What is the chemical symbol for the most abundent element on the face of the earth

A natural attraction AFFINITY
Discoverer of the noble gases (Sir William) RAMSAY
Refers to elements of the sixth period RARE EARTHS (RARE??)
Elements that are poor conductors of heat and electricity and are electronegative NON METALS

http://www.tutorvista.com/content/science/science-ii/metals-non-metals/physical-properties-metals-non-metals.php

27. To be in the form of gas GASEOUS
34. Rare earths of the seventh period ACTINIDE
37. He used X rays to determine atomic numbers . I thought it was Henry MOSELEY (but that is 7 letters!)
33. A series of rare earths of the sixth peroid LANTHANOID.
37. A class of elements that show luster, conduct heat and electric current, and are electropositive METALS ?
38. Elements that have certain metal properties but are classed as nonmetals METALLOIDS.
What is the chemical symbol for the most abundent element on the face of the earth. O for Oxygen (Silicon is second and Aluminium is third)

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