What Is the Electron Configuration for the Barium Atom

question 94

Multiple Choice

What is the electron configuration for the barium atom?

• A) 1s²2s²2p⁶3s²3p⁶4s²
• B) 1s²2s²2p⁶3s²3p⁶4s¹
• C) 1s²2s²2p⁶3s²3p⁶3d¹⁰4s²
• D) [Xe] 6s²
• E) none of these

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Definitions:

Purines

A type of nitrogenous base found in DNA and RNA, including adenine and guanine, which pair with pyrimidines.

Pyrimidines

One of the two classes of nitrogenous bases found in nucleic acids, including cytosine, thymine (in DNA), and uracil (in RNA).

Bacteriophages

Viruses that infect and replicate within bacteria.

Alfred Hershey

An American bacteriologist and geneticist, awarded the Nobel Prize in Physiology or Medicine in 1969 for his work on the genetics of viruses, including the famous Hershey-Chase experiment.