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Which of the following has the electronic configuration 1s2 2s2 2p6 3s2 3p6?

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Question: Which of the following has the electronic configuration 1s2 2s2 2p6 3s2 3p6?

Options:

  1. Neon
  2. Argon
  3. Krypton
  4. Xenon

Correct Answer: Argon

Solution: 

Argon has 18 electrons, and its electronic configuration is 1s2 2s2 2p6 3s2 3p6.

Which of the following has the electronic configuration 1s2 2s2 2p6 3s2 3p6?

Practice Questions

Q1
Which of the following has the electronic configuration 1s2 2s2 2p6 3s2 3p6?
  1. Neon
  2. Argon
  3. Krypton
  4. Xenon

Questions & Step-by-Step Solutions

Which of the following has the electronic configuration 1s2 2s2 2p6 3s2 3p6?
Correct Answer: Argon
  • Step 1: Understand that the electronic configuration describes how electrons are arranged in an atom.
  • Step 2: Break down the given electronic configuration: 1s2 2s2 2p6 3s2 3p6.
  • Step 3: Count the total number of electrons: 2 (from 1s) + 2 (from 2s) + 6 (from 2p) + 2 (from 3s) + 6 (from 3p) = 18 electrons.
  • Step 4: Identify the element with 18 electrons. This is done by looking at the periodic table.
  • Step 5: Find that the element with 18 electrons is Argon (Ar).
  • Step 6: Conclude that the electronic configuration 1s2 2s2 2p6 3s2 3p6 corresponds to Argon.
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