2. Atoms & Elements

Which statement best describes the relationship between the atomic number and the number of protons in an atom?

How many protons are present in an atom of tin (Sn)?

How many protons are present in an atom of nickel (Ni)?

Where is most of the atom's mass located?

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

Which of the following is a substance that is made up of only one type of atom?

Atoms are chemically the most stable when which of the following occurs?

How many protons are present in an atom of zinc?

Which of the following best describes the difference between elements and molecules?

Which subatomic particle determines the identity of an element?

Why is the nucleus of an atom positive in charge?

Which of the following is the number of protons in a neutral atom of chromium (Cr)?

An atom has a mass number of 32 and 17 neutrons. What is the atomic number of this atom?

How many protons and electrons are present in a neutral atom of strontium (Sr)?

Which of the following is the number of protons in a boron atom?