The Phenomenon Resulting from the Weakly Effective Screening of Outermost

question 16

Multiple Choice

The phenomenon resulting from the weakly effective screening of outermost electrons from the nucleus by f subshell electrons,resulting in only small differences in atomic radii in elements of atomic number 58-71,is called the:

• A)actinide expansion
• B)f-subshell extension
• C)lanthanide contraction
• D)elemental transition
• E)lattice distortion

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Definitions:

Platelets

Small blood cells that play a key role in blood clotting, helping prevent bleeding by clumping and forming plugs in blood vessel injuries.

Nucleus

The nucleus is an organelle found in eukaryotic cells that contains most of the cell's genetic material and controls its growth and reproduction.

Reproduce

means to produce offspring or new individuals, either sexually or asexually, ensuring the continuation of a species.

Erythrocytes

Red blood cells responsible for carrying oxygen from the lungs to the body tissues and carbon dioxide as a waste product away from the tissues back to the lungs.