Front

What is the electron configuration of an atom with 10 electrons?

Back

1s² 2s² 2p⁶

Front

What type of element is sulfur?

Back

Nonmetal

Front

What do elements in the same group have in common?

Back

They have the same number of valence electrons.

Front

Which element is not classified as an alkali metal?

Back

Hydrogen (H)

Front

What family does Radium (Ra) belong to?

Back

Alkaline earth metal

Front

What is the general trend in reactivity for alkali metals as you move down the group?

Back

Reactivity increases down the group.

Front

What is the significance of valence electrons in chemical bonding?

Back

Valence electrons determine how an atom can bond with other atoms.

Front

What is the common characteristic of noble gases?

Back

They have a full valence shell, making them mostly inert.

Front

How many valence electrons do elements in group 1 have?

Back

1 valence electron.

Front

What is the electron configuration for an alkaline earth metal?

Back

It ends with s² (e.g., Be: 1s² 2s²).