Naturally Occurring Element X Exists in Three Isotopic Forms: X-28

question 32

Multiple Choice

Naturally occurring element X exists in three isotopic forms: X-28 (27.979 u,77.03% abundance) ,X-29 (28.976 u,8.00% abundance) ,and X-30 (29.974 u,14.97% abundance) .Calculate the atomic weight of X.

• A) 29.64 u
• B) 28.36 u
• C) 29.05 u
• D) 29.60 u
• E) 27.38 u

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Definitions:

Genotype-Environment Correlation

Tendency of certain genetic and environmental influences to reinforce each other; may be passive, reactive (evocative), or active. Also called genotype-environment covariance.

Prenatal Stage

The period of development occurring before birth, from conception to the onset of labor, crucial for healthy fetal development.

Zygote

is the initial cell formed when a new organism is produced by sexual reproduction, resulting from the union of an egg and a sperm cell.

Spontaneously Aborted

A term used in medical contexts to describe a miscarriage that occurs naturally without medical intervention.