Periodic Classification of Elements
Crossword
Complete the crossword, then click on "Check" to check your answer. If you are stuck, you can click on "Hint" to get a free letter. Click on a number in the grid to see the clue or clues for that number.
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Check
Across:
1.
amount of energy released when an electron is added to an isolated gaseous atom.
3.
The tendency of an element to lose electrons and form positive ions (cations)
4.
the tendency of an atom to attract electrons towards itself in a molecule of a compound.
5.
combining capacity of an element
Down:
2.
The minimum energy needed to remove the outermost electron from the neutral atom in the gaseous state
OK