Which of the following elements has the electronic configuration [Xe] 6s2 4f14 5d10?

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Q: Which of the following elements has the electronic configuration [Xe] 6s2 4f14 5d10?

Solution: Mercury (Hg) has an atomic number of 80, and its electronic configuration is [Xe] 6s2 4f14 5d10.

Steps: 8

Step 1: Understand that the electronic configuration tells us how the electrons are arranged in an atom.
Step 2: Recognize that [Xe] represents the electron configuration of the noble gas Xenon, which has 54 electrons.
Step 3: The notation 6s2 means there are 2 electrons in the 6s subshell.
Step 4: The notation 4f14 means there are 14 electrons in the 4f subshell.
Step 5: The notation 5d10 means there are 10 electrons in the 5d subshell.
Step 6: Add the total number of electrons: 54 (from Xe) + 2 (from 6s) + 14 (from 4f) + 10 (from 5d) = 80.
Step 7: Look up the element with atomic number 80, which is Mercury (Hg).
Step 8: Conclude that the electronic configuration [Xe] 6s2 4f14 5d10 corresponds to Mercury (Hg).