Bohr Models and valence electrons

Front

What is a Bohr model?

Back

A Bohr model is a representation of an atom that shows electrons orbiting the nucleus in defined paths or shells.

Front

What are valence electrons?

Back

Valence electrons are the electrons in the outermost shell of an atom that are involved in chemical bonding.

Front

How many valence electrons does Boron have?

Back

Boron has 3 valence electrons.

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 determines the element's identity.

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 (rounded to the nearest whole number).

Front

What is the significance of the period number in the periodic table?

Back

The period number indicates the number of electron shells in the atoms of the elements in that row.

Front

How many protons does Phosphorus have?

Back

Phosphorus has 15 protons.

Front

What is the maximum number of electrons in the first shell of an atom?

Back

The maximum number of electrons in the first shell is 2.

Front

How many shells does an atom of Sulfur have?

Back

An atom of Sulfur has 3 shells.

Front

What is the relationship between the number of protons and electrons in a neutral atom?

Back

In a neutral atom, the number of protons equals the number of electrons.