Why Was Moseley So Sure from His X-Ray Work That

question 64

Multiple Choice

Why was Moseley so sure from his X-ray work that there were no other undiscovered elements besides the three that he predicted in the range of atomic numbers 13-79?

• A)The rows on the periodic table were filled.
• B)The columns of the periodic table were full.
• C)All of the possible atomic weights were assigned.
• D)All of the integer atomic numbers were assigned.
• E)Mendeleev didn't predict any more.

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Definitions:

Semicircular Canals

Structures within the inner ear that are key components of the vestibular system, helping to maintain balance by responding to rotational movements.

Sensory Restriction

Sensory restriction involves limiting one or more of the senses, such as sight or hearing, for therapeutic purposes, experimental research, or personal exploration of sensorial experience.

Visual Development

The process of improving and maturing the visual system, affecting how visual information is processed.

Critical Period

A specific time in development during which the presence or absence of certain experiences has a profound influence on the formation of abilities.