Question detail
Which of the following elements is classified as an alkali metal?
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. Helium
- B. Sodium
- C. Chlorine
- D. Neon
Answer
Sodium
Explanation
Sodium is a Group 1 element, making it an alkali metal, while the others are not.
Common mistake
Misunderstanding Outer Electrons
Students often think that Group 1 elements have more than one outer electron.
Remember that Group 1 elements, such as lithium, sodium, and potassium, each have exactly one electron in their outer shell.
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