Electron Configuration And Shells
This orbital can hold a maximum of 2 electrons.
Any single orbital.
Which subatomic particle has a positive charge?
A proton.
This constant is used in the equation E = hν.
Planck's constant.
How many protons, electrons, and neutrons are in an atom with atomic number 50 and mass number 125?
50 protons, 50 electrons and 75 neutrons.
Which atom is larger: Potassium (K) or Bromine (Br)?
K is larger.
This rule states that electrons fill the lowest energy orbitals first.
The Aufbau Principle.
This type of ion forms when an atom gains electrons.
An anion.
This equation relates energy and frequency of light.
E=hv.
How do the isotopes of Carbon-12 and Carbon-14 differ?
Carbon-14 has two more neutrons than Carbon-12.
Arrange in order of increasing size: Mg, Be, Ba, Sr and Ca?
Be< Mg< Ca< Sr< Ba
How many electrons can fit in the p sublevel?
What is the mass number and element of an atom with 12 protons and 14 neutrons?
26 and Iron.
As wavelength increases, what happens to frequency?
Decreases.
Which of the following has the greatest ionization energy? K, Ca, Fe, Ga or Br?
Bromine (Br).
Which element has the highest electronegativity?
Fluorine.
What is the electron configuration of nitrogen?
1s² 2s² 2p³.
An atom has 17 protons, 18 neutrons, and 18 electrons. What is its charge?
Charge is -1.
In PES, peaks closer to the left represent electrons with what kind of energy?
Higher binding energy.
What is the ground state electron configuration for arsenic is?
1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p3.
Which has a larger radius: Na or Na⁺?
Na.
Which element has the electron configuration [Ne] 3s² 3p⁴?
Sulfur.
What is the average atomic mass if 75% of an element is 10 amu and 25% is 12 amu?
10.5 amu.
This minimum energy is required to remove an electron in photoelectron spectroscopy.
Binding energy.
A 23.0g sample of a compound contains 12.0g of C, 3.0g of H, and 8.0g of O. Which of the following is the empirical formula of the compound? CH3O, C2H6O or C3H9O2?
C2H6O.
Electrons in the 1s subshell are much closer to the nucleus in Ar than in He due to the large ____ in Ar.
Nuclear charge.