2. Atoms & Elements

Which number is equal to the number of protons in an atom?

Which of the following statements is true about atoms?

Which of the following statements correctly describes the atomic number of an element?

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

What is the charge of an atom's nucleus?

How many protons does a sodium atom have?

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

What is the smallest particle of an element that still retains the properties of that element?

How many protons are in an atom of magnesium?

Which part of the atom is primarily responsible for chemical reactions between atoms?

Why is a complete atom considered to be electrically neutral?

How many electrons does a neutral fluorine atom have?

Which of the following particles make up the nucleus of an atom?

What is the smallest particle of an element that still retains all the properties of the element?

How many protons are present in a lithium atom?