Valence Electrons

Front

What are valence electrons?

Back

Valence electrons are the electrons in the outermost shell of an atom that are involved in forming bonds with other atoms.

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Front

How many valence electrons does Neon have?

Back

Neon has 8 valence electrons.

Front

What is the maximum number of electrons that can occupy the first shell of an atom?

Back

The maximum number of electrons that can occupy the first shell is 2.

Front

Which group of the periodic table contains elements with 8 valence electrons?

Back

Group 18 (Noble gases) contains elements with 8 valence electrons.

Front

What is the electron configuration of Argon?

Back

The electron configuration of Argon is 1s² 2s² 2p⁶ 3s² 3p⁶.

Tags

NGSS.HS-PS1-1

Front

How do you determine the number of valence electrons for an element?

Back

The number of valence electrons can be determined by looking at the group number of the element in the periodic table.

Front

What is a dot diagram (Lewis structure)?

Back

A dot diagram (Lewis structure) is a representation of the valence electrons of an atom, shown as dots around the element's symbol.

Tags

NGSS.HS-PS1-1

Front

Which element has 4 valence electrons and is represented by the symbol Si?

Back

Silicon (Si) has 4 valence electrons.

Front

What is the significance of valence electrons in chemical bonding?

Back

Valence electrons are significant because they determine how an atom can bond with other atoms to form molecules.

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

Front

What is the relationship between valence electrons and the reactivity of an element?

Back

Elements with fewer or more than 8 valence electrons tend to be more reactive, while those with 8 valence electrons (noble gases) are generally non-reactive.