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What is the electron configuration of the element with atomic number 30?
What is the electron configuration of the element with atomic number 30?
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Practice Questions
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Q1
What is the electron configuration of the element with atomic number 30?
[Ar] 4s2 3d10
[Kr] 5s2 4d10
[Ar] 4s2 3d8
[Ar] 4s2 3d9
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The element with atomic number 30 is Zn. Its electron configuration is [Ar] 4s2 3d10.
Questions & Step-by-step Solutions
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Q: What is the electron configuration of the element with atomic number 30?
Solution:
The element with atomic number 30 is Zn. Its electron configuration is [Ar] 4s2 3d10.
Steps: 8
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Step 1: Identify the atomic number. The atomic number 30 corresponds to the element Zinc (Zn).
Step 2: Understand that the electron 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.
Step 4: Fill the orbitals according to the Aufbau principle until you reach 30 electrons.
Step 5: The first 18 electrons fill up to Argon (Ar), which is [Ar].
Step 6: After Argon, add 2 electrons to the 4s orbital (4s2).
Step 7: Then, add 10 electrons to the 3d orbital (3d10).
Step 8: Combine these to write the full electron configuration: [Ar] 4s2 3d10.
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