MCQ practice · SSC Chemistry Board questions · Chapter 4: Periodic Table
Which element is chemically inert?
Think it through first, then pick an option.
- a Ne
- b Na
- c Cl
- d Ca
Answer and explanation
Correct answer: a Ne
Neon has 8 in its last level (a full octet), so it neither gives nor takes electrons. It is an inert gas.
Why the other options are wrong
- b Na: Na readily gives one electron to become Na⁺; it is very reactive. The answer is Ne.
- c Cl: Cl readily takes one electron to become Cl⁻; it is reactive. The answer is Ne.
- d Ca: Ca gives two electrons to become Ca²⁺; it is a reactive metal. The answer is Ne.
More board questions on this topic
- Which is an alkaline earth metal?
- Which of these is a coin metal?
- Which is an alkaline earth metal?
- Which of these is a coin metal?
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