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Which element has the highest atomic number in the first 20 elements? (2020)

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Question: Which element has the highest atomic number in the first 20 elements? (2020)

Options:

  1. Calcium
  2. Potassium
  3. Argon
  4. Chlorine

Correct Answer: Calcium

Solution: 

Calcium has the highest atomic number (20) among the first 20 elements.

Which element has the highest atomic number in the first 20 elements? (2020)

Practice Questions

Q1
Which element has the highest atomic number in the first 20 elements? (2020)
  1. Calcium
  2. Potassium
  3. Argon
  4. Chlorine

Questions & Step-by-Step Solutions

Which element has the highest atomic number in the first 20 elements? (2020)
  • Step 1: List the first 20 elements of the periodic table.
  • Step 2: Identify the atomic numbers of these elements.
  • Step 3: Compare the atomic numbers to find the highest one.
  • Step 4: Determine which element corresponds to the highest atomic number.
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