2. Atoms & Elements

How many electrons are present in a neutral atom of lithium?

How many protons are present in an atom of tungsten (W)?

Which statement about one atom of an element identifies the element?

According to diagrams showing elemental abundances in the Milky Way galaxy, which element is the third most abundant?

If the boron nitride molecule, BN, were to form, what would its structure most likely resemble?

Why do atoms have no overall electric charge even though most of their subatomic particles are charged?

Oxygen has an atomic number of 8. What can you conclude from this fact?

How many electrons does a neutral potassium (K) atom have?

The ozone layer absorbs most of the incoming _____ radiation.

What determines the reactivity of an atom?

Which of the following is the number of neutrons in the most common isotope of hydrogen?

Which of the following is the number of protons in a gold (Au) atom?

Which particles are counted to determine the mass number of an atom?

Which element has 6 protons in its nucleus?

The atomic number of oxygen is 8. What is the mass number of an oxygen atom with 7 neutrons?