Question detail
What do elements in the same group of the periodic table have in common?
Try the question, check the answer, then read the explanation to understand the curriculum point.
At a glance
MCQ
Type
practice
Style
Topic
The periodic table
Question
- A. The same number of protons
- B. The same number of outer-shell electrons
- C. The same atomic mass
- D. The same number of neutrons
Answer
The same number of outer-shell electrons
Explanation
Elements in the same group have the same number of outer-shell electrons, which gives them similar chemical properties.
Common mistake
Misunderstanding Atomic Number Arrangement
Students often think elements are arranged by atomic mass instead of atomic number in the periodic table.
Remember that the modern periodic table arranges elements in order of increasing atomic number, which is the number of protons in the nucleus.
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