Isotopes & Bohr Diagrams Flashcard

Front

What does a Bohr diagram represent for an atom?

Back

A Bohr diagram represents the arrangement of electrons in an atom, showing their orbits around the nucleus.

Front

What is an isotope?

Back

An isotope is a variant of a chemical element that has the same number of protons but a different number of neutrons.

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NGSS.HS-PS1-8

Front

How is the mass number of an isotope calculated?

Back

The mass number is calculated by adding the number of protons and neutrons in the nucleus.

Front

What is the significance of the nucleus in an atom?

Back

The nucleus contains protons and neutrons, and it is the central part of the atom that holds most of its mass.

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NGSS.HS-PS1-8

Front

How many electrons can the first energy level hold according to the Bohr model?

Back

The first energy level can hold a maximum of 2 electrons.

Front

What is the difference between the Bohr diagrams of hydrogen and helium?

Back

The Bohr diagram for hydrogen shows one electron, while the diagram for helium shows two electrons in the first energy level.

Front

What does the number below the element symbol in isotope notation represent?

Back

The number below the element symbol represents the atomic number, which is the number of protons in the nucleus.

Tags

NGSS.HS-PS1-8

Front

Why are energy levels quantized in the Bohr model?

Back

Energy levels are quantized in the Bohr model because electrons can only occupy specific energy levels and cannot exist between them.

Front

What is the role of neutrons in an atom?

Back

Neutrons contribute to the mass of the atom and help stabilize the nucleus.

Tags

NGSS.HS-PS1-8

Front

How do you determine the number of neutrons in an isotope?

Back

To determine the number of neutrons, subtract the atomic number from the mass number.