Atomic Structure
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.
the number of protons in an atom
3.
atoms of same element having different number of neutrons
4.
the protons and neutrons are called
5.
atoms having same mass number but different atomic number
6.
positively charged particle
Down:
2.
total number of neutrons and protons present in an atom
OK