An Element That Has the Valence Electron Configuration 6s²5d⁷ Belongs

question 5

Multiple Choice

An element that has the valence electron configuration 6s²5d⁷ belongs to which period and group?

• A)period 7; group 9
• B)period 6; group 7
• C)period 6; group 2
• D)period 6; group 9
• E)period 7; group 7

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Definitions:

Otosclerosis

Hardening or immobilization of the stapes within the inner ear.

Ménière's Disease

A disorder of the inner ear characterized by episodes of vertigo, hearing loss, tinnitus, and a feeling of fullness in the ear.

Presbycusis

Age-related hearing loss, gradually occurring as individuals get older, affecting the ability to hear higher frequencies at first.

Labyrinthitis

An inner ear disorder that causes inflammation of the inner ear labyrinth, leading to vertigo, hearing loss, and balance difficulties.