What is the electronic configuration of the element with atomic number 30?

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Question: What is the electronic configuration of the element with atomic number 30?

Options:

Correct Answer: [Ar] 4s2 3d10

Solution:

The electronic configuration of Zinc (atomic number 30) is [Ar] 4s2 3d10.

What is the electronic configuration of the element with atomic number 30?

What is the electronic configuration of the element with atomic number 30?

Step 1: Identify the element with atomic number 30. This element is Zinc (Zn).
Step 2: Understand that the electronic configuration shows how electrons are arranged in an atom.
Step 3: Recall the order of filling electron orbitals: 1s, 2s, 2p, 3s, 3p, 4s, 3d, 4p, etc.
Step 4: Fill the orbitals according to the Aufbau principle until you reach atomic number 30.
Step 5: The filling order for Zinc is: 1s2, 2s2, 2p6, 3s2, 3p6, 4s2, 3d10.
Step 6: Combine the filled orbitals to write the complete electronic configuration.
Step 7: The final electronic configuration for Zinc is [Ar] 4s2 3d10, where [Ar] represents the electron configuration of Argon (atomic number 18).

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