2. Atoms & Elements

Which of the following is an element?

Which of the following substances has a molecule as its smallest representative particle?

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

In an atom, where are the electrons most likely to be found?

Which of the following is the number of protons found in an atom of argon?

Which of the following species has 28 protons and 26 electrons?

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

What is the net charge of the nucleus of an atom?

Which positively charged particle is located at the center of the atom in the nucleus?

What is the overall charge of a neutral atom?

Which element is a key component found in both carbon dioxide (CO_2) and glucose (C_6H_{12}O_6)?

Who was the first scientist to identify the element radium?

The number of protons in one atom of an element determines the atom's:

Which is the smallest part of an element that retains all the properties of the element?

What is the charge of a lithium ion, given that lithium's atomic number is 3?