Who Found That the Atomic Number Was Equal to the Number

question 55

Multiple Choice

Who found that the atomic number was equal to the number of protons in the nucleus and to the number of electrons outside the nucleus in a neutral atom?

• A) Meyer
• B) Newlands
• C) Moseley
• D) Mendeleev
• E) Thomson

---

Definitions:

Antagonist

In pharmacology, a substance that blocks or dampens the effects of a neurotransmitter or hormone. In literature, the character who opposes the protagonist.

Opiate

A category of drugs naturally derived from the opium poppy plant that are used for pain relief but are also highly addictive.

Childbirth

The process of giving birth to a baby, ranging from the onset of labor to the delivery of the child.

Endorphins

Natural, pain-relieving chemicals produced by the body that promote a sense of well-being and can diminish the perception of pain.