Identify Which of the Following Elements Is an Alkali Metal

question 13

Multiple Choice

Identify which of the following elements is an alkali metal.

• A)Cs
• B)Zn
• C)Sr
• D)Mg

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Definitions:

Mitral Valve

A valve in the heart that allows blood to flow from the left atrium into the left ventricle but prevents it from flowing back into the atrium.

Atrioventricular Valve

Heart valves located between the atria and ventricles of the heart, facilitating unidirectional blood flow.

Bicuspid Valve

A valve in the heart that has two cusps or flaps, and controls blood flow between the left atrium and the left ventricle; also known as the mitral valve.

Sinoatrial Node

The heart's natural pacemaker, located in the right atrium, responsible for initiating the heart's contractions.