Which Element Has the Ground-State Electron Configuration [Xe]6s² 4

question 59

Multiple Choice

Which element has the ground-state electron configuration [Xe]6s² 4?

• A)Re
• B)Ir
• C)Eu
• D)Gd

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Definitions:

Dizygotic Twins

Also known as fraternal twins, these are two siblings born from separate eggs and fertilized by different sperm cells, sharing about 50% of their DNA.

Twin-Study Design

A research method that compares the behaviours and traits of monozygotic (identical) and dizygotic (fraternal) twins to understand the influence of genetics versus environment.

Monozygotic Twins

Twins derived from a single fertilization event, resulting in siblings with identical genetic material.

Dizygotic Twins

Twins resulting from the fertilization of two different eggs by two different sperm, sharing 50% of their genes, similar to ordinary siblings.