The three basic atomic particles are:

The positive charge of the nucleus is due to the presence of:

The atomic number (Z) of an element equals the number of:

The number of protons and neutrons in an atom defines its:

The neutron’s electrical charge is:

The mass of an electron is approximately:

The nucleus is held together by:

The electron orbits are arranged by their:

The outermost shell of an atom is called the:

The closer an electron is to the nucleus, the:

Removing an electron from its orbit is called:

The amount of energy required to remove an electron is the:

If the K-shell binding energy is 70 keV, how much energy is needed to remove that electron?

When an atom loses an electron, it becomes a:

When an atom gains an electron, it becomes a:

The energy of a bound electron is measured in:

The K-shell electrons in high-Z elements have:

Ionization changes an atom’s:

The maximum number of electrons in any shell is determined by:

For the L shell (n = 2), the maximum number of electrons is:

For the M shell (n = 3), the maximum number of electrons is:

Which shell has the highest binding energy?

The binding energy is expressed in what unit?

The binding energy of a tungsten K-shell electron is approximately:

An x-ray photon of 90 keV strikes a tungsten atom (K-shell binding energy 69.5 keV). What is the kinetic energy of the ejected electron?

When an outer electron fills a K-shell vacancy, the energy difference is released as:

The valence shell determines:

Atoms with eight electrons in their outer shell are considered:

Atoms of the same element with different numbers of neutrons are:

The isotope carbon-14 differs from carbon-12 because it has:

The energy holding the nucleus together is the:

The unit used for expressing atomic mass is the:

If an element has 15 protons and 16 neutrons, what is its mass number?

The element with atomic number 53 is:

If an atom loses 3 electrons, it becomes a:

If an atom gains one neutron:

The K-shell binding energy of lead is 88 keV. Which photon could eject a K-shell electron?

How many electrons are in a neutral atom of tungsten (Z = 74)?

If an element has 26 protons, 30 neutrons, and 23 electrons, what is its net charge?

The discovery of the atom’s nucleus was made by:

The Bohr model of the atom introduced the concept of:

Which subatomic particle determines the chemical identity of an element?

What is the charge of a proton?

Which atomic shell is closest to the nucleus?

How many electrons does a neutral carbon atom have?

Which of these is the electron?

Which of the following is true about isotopes?

What does the atomic number tell you?