The Energy Needed to Change a He⁺ Ion in the Ground

question 51

Multiple Choice

The energy needed to change a He⁺ ion in the ground state into a He²⁺ ion is

• A) 13.6 eV
• B) 54.4 eV
• C) 112.4 eV
• D) 92.9 eV
• E) 27.2 eV

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Definitions:

Volume

The quantity of three-dimensional space occupied by a substance or item.

°C

A unit of temperature on the Celsius scale, a temperature scale originally known as the centigrade scale, with 0°C denoting the freezing point of water and 100°C its boiling point at sea level.

Atm

A unit of pressure defined as being equal to the pressure exerted by the Earth's atmosphere at sea level; approximately 101.325 kPa.

Volume

The amount of space that a substance or object occupies, or that is enclosed within a container.