A Particular Nucleus of the Element Erbium Contains 68 Protons

question 36

Multiple Choice

A particular nucleus of the element erbium contains 68 protons and 90 neutrons.What is the total number of electrons in the neutral erbium atom?

• A)90
• B)158
• C)22
• D)68
• E)None of the above

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Definitions:

NMR Spectrum

A graphical representation of the nuclear magnetic resonance of atoms within molecules, providing information on the structure, dynamics, reaction state, and chemical environment of the molecule.

Splitting

A process or reaction where a larger molecule is divided into two or more smaller entities, often used in reference to nuclear fission or chemical decomposition.

NMR Spectrum

A technique used in chemistry to determine the structure of molecules by measuring the interaction of nuclear spins when placed in a magnetic field.

Splitting

In chemical terms, it refers to the division of a spectral line or a magnetic resonance signal into several components, often due to the interaction between different nuclei or external fields.