Waste Management
question 1 of 1
Grade: Form 1
Q: 39 Which of the following is likely to contribute to land pollution?
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Did You Know?
Ca²⁺ has 18 electrons (20-2). Cl⁻ has 18 electrons (17+1). K⁺ has 18 electrons (19-1). O²⁻ has 10 electrons (8+2). O²⁻ has the smallest number of electrons.
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