Bohr Models and valence electrons

Front

What is a Bohr model?

Back

A Bohr model is a diagram that represents the structure of an atom, showing electrons in specific energy levels around the nucleus.

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 do you determine the number of neutrons in an atom?

Back

To find the number of neutrons, subtract the atomic number (number of protons) from the atomic mass (rounded to the nearest whole number).

Front

What subatomic particle identifies an element?

Back

The proton identifies an element; the number of protons in the nucleus defines the element's atomic number.

Front

How many protons are in an atom of Sulfur (S)?

Back

An atom of Sulfur has 16 protons.

Front

How many valence electrons does an atom of Sodium (Na) have?

Back

An atom of Sodium has 1 valence electron.

Front

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

Back

The maximum number of electrons in the first energy level is 2.

Front

How many valence electrons do elements in group 14 (4A) contain?

Back

Elements in group 14 (4A) contain 4 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 find the number of electrons in a neutral atom?

Back

In a neutral atom, the number of electrons is equal to the number of protons.