crossword
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:
3.
Elements having completely filled outermost shell show
4.
........... is defined as the path, by which electrons revolve around he nucleus
5.
.................. has atomic number 14
Down:
1.
Elements with 4 to 7 electrons in their valence shell are ..........
2.
Elements, which have valence electrons 1 or 2 or 3 (except Hydrogen) are
OK