2. Atoms & Elements

An atom has a mass number of 210 and an atomic number of 85. How many neutrons does this atom have?

Which subatomic particle determines the identity of an element?

In a water molecule (H₂O), which atom carries a partial negative charge?

Which part of an atom contains the protons and neutrons?

How many protons are present in an atom with an atomic number of 23 and a mass number of 51?

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

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

Which of the following descriptions correctly describes the structure of an atom?

Which of the following best describes the atomic number of an atom?

Which subatomic particle determines the identity of an element?

Which of the following is the smallest chemical unit that retains the properties of a pure substance?

Which of the following correctly describes an atomic orbital?

Which of the following is the number of protons in a neutral atom of nickel (Ni)?

In which parts of an atom are electrons, protons, and neutrons primarily located?

Which type of subatomic particle is found in the electron cloud of an atom?