Atomic Structure

Front

What is the electron arrangement for sulfur?

Back

2-8-6

Front

What do atoms of elements in the same group of the periodic table share?

Back

The same number of valence electrons.

Front

What is an atom's nucleus made of?

Back

Protons and neutrons.

Front

How many electrons are in the outer shell of a sodium atom?

Back

1

Front

Why is hydrogen in group 1 with lithium and sodium?

Back

Because it has 1 valence electron.

Front

What is the atomic number of an element?

Back

The number of protons in the nucleus of an atom.

Front

What are valence electrons?

Back

Electrons in the outermost shell of an atom that determine its chemical properties.

Front

What is the significance of the periodic table?

Back

It organizes elements based on their atomic number and properties.

Front

What is the difference between an atom and a molecule?

Back

An atom is the smallest unit of an element, while a molecule is a group of atoms bonded together.

Front

What is the charge of a proton?

Back

Positive.