2. Atoms & Elements

Which element has 16 protons in its nucleus?

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

How many oxygen atoms are present in a single molecule of water (H_2O)?

How many electrons are present in a neutral atom of tin (Sn)?

Which part of an atom accounts for most of its volume?

Which of the following statements about atoms is true?

Given the representation of a chlorine atom as 35Cl , how many neutrons are present in this atom?

Compared to an atom as a whole, an atomic nucleus is:

Which of the following best describes atoms?

How many protons are present in a nitrogen atom with a 3- charge?

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

Where are the protons and neutrons located in an atom?

How many protons and electrons are present in a neutral atom of element with atomic number 44?

What is the overall electric charge of the nucleus of an atom?

The identity of a chemical element is determined by which of the following?