2. Atoms & Elements

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

How many total electrons does a neutral lithium atom have?

A neutral atom of aluminum-27 contains:

In an atom, where are protons located?

How many total electrons are present in a neutral atom of carbon?

In the chemical formula SiCl_4, what does the number '4' represent?

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

The region outside the nucleus where an electron can most probably be found is the:

How many electrons are present in a neutral atom of carbon-14?

Which scientist is credited with the discovery of the atomic nucleus?

Which of the following atoms has the smallest number of neutrons?

Which of the following best describes the overall charge of an atom's nucleus?

How many electrons can the first energy level (n = 1) of an atom hold?

Which element has an atom with a nucleus containing 56 protons and 82 neutrons?

Which of the following is the number of electrons in a neutral atom of scandium (Sc)?