An Yttrium Isotope Has 39 Protons and 50 Neutrons in Its

question 99

Multiple Choice

An yttrium isotope has 39 protons and 50 neutrons in its nucleus.Which one of the following symbols accurately represents this isotope?

• A) Y
• B) Y
• C) Y
• D) Y
• E) Y

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Definitions:

Urine

A liquid by-product of metabolism in humans and many animals, expelled from the body.

Semen

A fluid containing sperm and other secretions from the male reproductive system, involved in reproduction.

Urethra

The tube that carries urine from the bladder to the outside of the body, and in males, also serves as a conduit for semen.

Vagina

The muscular tube leading from the external genitals to the cervix of the uterus in females, part of the reproductive system.