SC-68
Atoms, elements and compounds
Lower Sec Science · Secondary 1 · Hard · Atoms, elements and compounds
Element A has proton number 8 and nucleon number 16. Element B has proton number 8 and nucleon number 18. What is the relationship between A and B?
- They are different elements because their nucleon numbers differ.
- They are isotopes because they have the same proton number but different nucleon numbers.
- They are identical atoms because they have the same nucleon number.
- They form a compound because their proton numbers are the same.
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