Which Set of Elements Below Contains, Respectively, an Alkaline Earth

question 129

Multiple Choice

Which set of elements below contains, respectively, an alkaline earth metal, a noble gas, and a transition metal?

• A)Ca, Ar, Pb
• B)Mg, N, Cu
• C)Sr, He, Ni
• D)Na, Xe, Fe
• E)Li, Rn, Cr

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Definitions:

Opiate

A group of drugs derived from opium, used for pain relief, but also associated with addiction and dependence.

Excitatory Messages

Neurological signals that increase the likelihood of a neuron firing and thus stimulate action in the nervous system.

Inhibitory Message

A neurological or psychological signal that reduces or prevents certain actions, thoughts, or feelings.

Refractory Period

A resting period after orgasm, during which a man cannot achieve another orgasm.