Periodic table

An online crossword puzzle with 19 words. Play it free at AgileCrosswords.com.

Clues

• electrons in the outside electron ring
• elements in groups 3-12
• number of electrons needed to complete an outside electron level
• person credited for the periodic table
• negative charged particles in an atom
• represents a compund
• positive charged particle in the nucleus
• a horozontal row in the periodic table
• group one
• the smallest part of an element
• the number of protons and electrons in an atom
• family 18
• two or more elements chemically bonded together
• a neutral particle in the nucleus
• family 17
• oxidation number is +2
• make up compounds
• a vertical column in the periodic table
• Pb

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