The Valence Shell ________

question 72

Multiple Choice

The valence shell ________.

• A)always contains eight electrons
• B)is the lowest energy shell in an atom
• C)is the outermost occupied shell in an atom
• D)is always the same for anions and cations

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Definitions:

Pilot Devices

Controls or indicators used in a circuit to monitor, operate, or control the functioning of machinery or equipment.

Two-wire Control

A control circuit configuration using two wires to connect the control element, typically for simple on/off operations.

No-voltage Drop-out

A feature in electrical control circuits that causes the device to trip or shut off when the supply voltage falls below a certain level, enhancing safety.

Low-voltage Drop-out

A protective feature in electrical devices that causes them to turn off when voltage levels fall below a specified threshold.