Bohr Diagrams Practice

Front

What is a Bohr diagram?

Back

A Bohr diagram is a visual representation of an atom that shows the arrangement of electrons in energy levels around the nucleus.

Front

What do the circles in a Bohr diagram represent?

Back

The circles represent different energy levels or shells where electrons are located.

Front

How many electrons can the first energy level hold?

Back

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

Front

How many electrons can the second energy level hold?

Back

The second energy level can hold a maximum of 8 electrons.

Front

What do the dots in the outer circle of a Bohr diagram represent?

Back

The dots represent valence electrons, which are the electrons in the outermost shell.

Front

What is the atomic number of an element?

Back

The atomic number is the number of protons in the nucleus of an atom, which also equals the number of electrons in a neutral atom.

Front

What is the significance of valence electrons?

Back

Valence electrons determine how an element reacts chemically and its bonding behavior.

Front

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

Back

The number of neutrons can be found by subtracting the atomic number from the atomic mass.

Front

What is the atomic mass of an element?

Back

The atomic mass is the weighted average mass of an element's isotopes, measured in atomic mass units (amu).

Front

What element has the atomic number 4?

Back

Beryllium (Be) has the atomic number 4.