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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6
Check
Across:
5.
the structure of atom is same as structure of
6.
atoms with same number of neutrons
Down:
1.
proton was discovered by
2.
he discovered the presence of negatively charged particle in an atom
3.
contains 3 protons and 4neutrons
4.
the particle that make up an atom
OK