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secondary 4 | Chemistry
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claire wong
Claire Wong

secondary 4 chevron_right Chemistry

hi can someone explain 11? the answer is B but isnt D correct as well?

Date Posted: 6 years ago
Views: 568
Tham KY
Tham KY
6 years ago
Elements are arranged according to proton number in the Periodic table. One proton gained, arranged to the right. One neutron gained, it is an isotope of that element, still at the same position in the periodic table.

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SHAUN CHEW TONGRUI
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