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"atom, element and compound ": HTML5 Crossword

Across

1. all metals are solid in room temperature except _____ (7)
3. valence electron of oxygen ion (5)
5. diamond has _____ structure (11)
6. first person to discover atomic structure (10)
8. _____ is used for cutting and drilling hard materials (7)
10. _____ is a covalent compound that could turns limewater cloudy (13)
14. magnesium need to _____ 2 electrons to achieve stable electron arrangement (6)
15. one type of alloy (6)

Down

2. ionic bond has strong _____ forces hence has high MP and BP (13)
4. graphite has delocalised _____ so that can conduct electricity (8,0)
7. iodine-131 is used in _____ treatment (7)
9. Nucleon number is sum of number of proton and _____ (7)
11. location of proton in an atom (7)
12. transfer of electron (5,4)
13. all non-metals cannot conduct electricity except _____ (6)

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