Electron Configuration Practice Test

What is the most common charge for an ion of rubidium?

+1

What is the maximum number of electrons that can fit into an d orbital?

10

Write the shorthand electron configuration for the ion Na +1. Use spaces.

1s2 2s2 2p6

Write the shorthand electron configuration for the ion Cl -1. Use spaces.

1s2 2s2 2p6 3s2 3p6

Write the shorthand electron configuration for Mn. Use spaces.

1s2 2s2 2p6 3s2 3p6 3d5 4s2

Write the long hand electron configuration for Al, use spaces.

1s2 2s2 2px2 2py2 2pz2 3s2 3px1

Write the shorthand electron configuration for the ion Zn +2. Use spaces.

1s2 2s2 2p6 3s2 3p6 3d10

How does the energy of an electron change as it moves closer to the nucleus?

it decreases

The electron configuration 1S2 2S2 2P6 3S2 3P4 represents which element?

sulfur

Write the long hand electron configuration for K, use spaces.

1s2 2s2 2px2 2py2 2pz2 3s2 3px2 3py2 3pz2 4s1

The filling of which orbital is represented by the transition metals in period 4?

3d

How many electrons can fit in the 2nd energy level?

8

The specific frequencies of light a gas emits that identify that gas.

Atomic emission spectrum

Electrons occupy orbitals of the lowest energy first

Aufbau

In the Bohr model the series that describes wavelengths of electromagnetic radiation in the visible light potion of the spectrum.

Balmer

Includes electromagnetic wavelengths in the visible region

Balmer

Which of these elements electron configuration is an exception to the Aufbau principle.

Cu

The ability of an atom to attract electrons.

Electronegativy

There must be 1 electron in each orbital of the same energy before there will be 2 in the first

Hund

Includes electromagnetic wavelengths in the ultraviolet region.

Lyman

When the elements silicon, sulfur, and sodium are arranged in size from largest to smallest, the order is

Na>Si>S

Includes electromagnetic wavelengths in the infrared region.

Paschen

There can be only two electrons of opposite spin in each orbital.

Pauli Exclusion

An electron is ejected from a sheet of metal when certain wavelengths of light shines on the metal.

Photoelectric Effect

Which element has 2 unpaired electrons in its p orbital?

Si

Write the shorthand electron configuration for Sb. Use spaces. Start at the previous noble gas. [ ]

[Kr] 4d10 5s2 5p3

Write the shorthand electron configuration for Am. Use spaces. Start at the previous noble gas. [ ]

[Rn] 5f6 6d1 7s2

atom that has gained an electron (negatively charged ion)

anion

Why do electrons enter the 6s orbital before the 5d orbital?

because 6s is a lower energy level

Which of the following has the smallest ionization energy?

calcium

an atom that has lost an electron (positively charged ion)

cation

Atomic radii _________________ from left to right across the periodic table.

decrease

Emission of light from an atom occurs when an electron

drops from a higher to a lower energy level.

Which element has the highest electronegativity?

fluorine

Which type of electromagnetic radiation has the shortest wavelength.

gamma ray

Which portion of the periodic table is represented by f orbitals?

inner transition metals

Has a different number of electrons than protons?

ion

The energy needed to remove a mole of electrons from a mole of neutral gaseous atoms is known as ____________ energy.

ionization

Atoms and ions of different elements that have the same electron configuration are said to be....

isoelectronic

Have the same number of protons but different numbers of neutrons.

isotope

If three electrons are available to fill three empty 2p orbitals, how will these electrons be distributed?

one electron in each orbital

According to the Pauli exclusion principle, when can two electrons occupy the same orbital.

only if they have opposite spins

When an electron jumps from a high energy state to a low state, what form does the emitted energy take? (quanta of light)

photon

a specific amount of energy that is gained or lost when an electron moves

quantam

What happens when an atom is exposed to an energy source such as electricity?

the electrons jump to a higher energy level

The electrons in the s and p orbitals of the outermost occupied energy level are referred to as _____________ electrons.

valence