Mass Spec & Configuration
This device separates ions by their mass to charge ratio to show isotope abundance
What is a mass spectrometer?
This is the ground state electron configuration for a neutral Carbon atom.
What is 1s2 2s2 2p2?
The position of a peak on a PES spectrum corresponds to this specific value, usually measured in MJ per mol.
What is binding energy?
This trend describes the ability of an atom to attract shared electrons in a covalent
What is electronegativity?
This type of chemical formula shows the simplest whole number ratio of atoms in a compound.
What is an empirical formula?
An element has two isotopes: Mass 10 (20 percent) and Mass 11 (80 percent). This is its average atomic mass.
What is 10.8 amu?
This rule or principle states that electrons must occupy the lowest energy orbital available first.
What is the Aufbau Principle?
In a PES spectrum for Oxygen, this subshell peak will be closest to the y axis, representing the highest binding energy.
What is the 1s peak?
Atomic radius follows this specific trend as you move from left to right across Period 2.
What is decreasing?
This is the empirical formula of a hydrocarbon that is 75 percent Carbon and 25 percent Hydrogen by mass
What is CH4?
This is the mathematical reason why the atomic mass of Chlorine on the periodic table is 35.45 instead of a whole number.
What is a weighted average of its natural isotopes?
This is the correct ground state electron configuration for a P 3 minus phosphide ion
What is 1s2 2s2 2p6 3s2 3p6
This law explains why 1s electrons have a much higher binding energy than valence electrons.
What is Coulombs Law?
This specific internal factor explains why the atomic radius decreases across a period despite adding more electrons.
What is an increase in effective nuclear charge?
According to this law, a pure chemical compound always contains the exact same proportion of elements by mass.
What is the Law of Definite Proportions?
On a mass spectrum graph, this specific feature represents the relative abundance of each isotope.
What is the height of the peak?
This element has the noble gas configuration Ar 4s2 3d5.
What is Manganese?
If a PES spectrum shows 3 peaks with height ratios of 2 to 2 to 3, this is the identity of the element.
What is Nitrogen?
This element has the highest first ionization energy on the entire periodic table.
What is Helium?
To find the mass percent of water in a hydrated salt, a student would use this specific laboratory method.
What is gravimetric analysis?
Pure elemental Bromine gas has two stable isotopes: Br 79 and Br 81. This is the total number of distinct peaks you expect to see on its molecular mass spectrum.
What is 3 peaks?
This is the electron configuration for a neutral Copper atom, which is a well known exception to standard filling rules.
What is Ar 4s1 3d10?
Comparing the PES spectra of Lithium and Sodium, this is why Sodium 1s peak is shifted further to the left, towards higher energy, than Lithium 1s peak.
What is Sodium has a higher nuclear charge or more protons?
This is the scientific explanation for why the first ionization energy of Oxygen is slightly lower than that of Nitrogen, defying the general periodic trend.
What is electron electron repulsion?
A mixture contains NaCl and MgCl2. If a student precipitates out all chloride ions using excess silver nitrate, this is the type of chemical analysis being performed
What is elemental analysis?