The wavelength of a photon that has an energy of 5.25 x 10-19 J is __________ m

• 4.21 x 10-24

• 2.38 x 1023

• 2.64 x 106

• 3.79 x 10-7

Tags

NGSS.HS-PS4-1

The lines in the emission spectrum of hydrogen result from __________.

• electrons given off by hydrogen as it cools

• decomposing hydrogen atoms

• electrons given off by hydrogen when it burns

• energy given off in the form of visible light when an electron moves from a higher energy state to a lower energy state

Tags

NGSS.HS-PS4-3

Which one of the following represents an acceptable possible set of quantum numbers (in the order n, l, ml, ms) for an electron in an atom?

• 2, 1, 0, 0

• 2, 2, 0, 1/2

• 2, 0, 2, +1/2

• 2, 0, 1, -1/2

• 2, 1, -1, 1/2

Which of the subshells below do not exist due to the constraints upon the azimuthal quantum number?

• 2p

• 2s

• 2d

• all of the above

The first ionization energies of the elements __________ as you go from left to right across a period of the periodic table, and __________ as you go from the bottom to the top of a group in the table

• increase, increase

• increase, decrease

• decrease, increase

• decrease, decrease

• are completely unpredictable

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

Which ion in the isoelectronic series below has the smallest radius in a crystal?

• O2-

• N3-

• Na+

• Al3+

• F-

Tags

NGSS.HS-PS1-1

__________-orbitals are spherically symmetrical

• d

• p

• s

• f

An example of an electron configuration of a transition metal is __________.

• 1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6 5s1

• 1s2 2s2 2p6 3s2 3p5

• 1s2 2s2 2p6 3s2 3p6 4s2 3d8

• 1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6

• 1s2 2s2 2p4 3s1

Tags

NGSS.HS-PS1-1

The electron configuration of the atom that is expected to have the highest first ionization energy is __________

• [Kr] 5s1

• [Ne] 3s2 3p5

• [Ar] 4s2 3d10 4p4

• [Ne] 3s2 3p6

• [Ar] 4s1

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

Of the choices below, which gives the order for first ionization energies?

• Cl > S > Al > Ar > Si

• S > Si > Cl > Al > Ar

• Al > Si > S > Cl > Ar

• Cl > S > Al > Si > Ar

• Ar > Cl > S > Si > Al

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2