2. Atoms & Elements

A carbon atom has a mass number of 12 and an atomic number of 6. How many neutrons does it have?

Which of the following is the smallest particle of an element that retains the chemical properties of that element?

Which of the following best describes the charge of an electron?

In an atom, where are electrons primarily located?

An atom has 15 protons and 14 neutrons. What is the atomic number of this atom?

How many protons are present in a neutral atom of aluminum?

What is the charge of an atom's nucleus?

How many electrons are present in a neutral atom of potassium (K)?

Which statement best describes the structure of atoms?

Which of the following best describes the charge of an electron?

How many protons are present in the nucleus of an atom with atomic number 15?

How many protons does a sodium atom have?

How do the atoms of different elements differ from one another?

Nitrogen has an atomic number of seven. How many electron shells does it likely have?

How many protons are present in a neutral atom of carbon?