What Element Has the Electron Configuration 1s²2s²2p⁶3s²3p⁶4s²3d¹⁰4p⁵

question 54

Multiple Choice

What element has the electron configuration 1s²2s²2p⁶3s²3p⁶4s²3d¹⁰4p⁵?

• A) Cl
• B) Se
• C) I
• D) Kr
• E) Br

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Definitions:

Aposematic

Pertains to the bright coloration or markings of an animal that serve as a warning signal to predators that it is toxic, noxious, or otherwise harmful.

Camouflaged

Describes an organism or object that is disguised by blending in with its surroundings to avoid detection.

Keystone Species

A species on which other species in an ecosystem largely depend, such that if it were removed the ecosystem would change drastically.

Symbionts

The partners in a symbiotic relationship.