Stoichiometry
According to the equation 2Na + Cl₂ → 2NaCl, one mole of Cl₂ can produce this many moles of NaCl.
2 mol NaCl
This phenomenon occurs when electrons are ejected from a metal surface after light of sufficient frequency shines on it.
the photoelectric effect
These are the electrons located in the highest occupied principal energy level of a main-group atom
Outer electrons
This type of bond occurs when atoms share electrons unequally because they have different attractions for electrons.
A polar covalent bond
How many total valence electrons are available when drawing the Lewis structure of NH₃?
8 electrons
How many grams are in 0.500 mol of CO₂?
(Molar mass CO₂ = 44.01 g/mol)
22.0 g
Which has the greater frequency: light with a wavelength of 400 nm or light with a wavelength of 700 nm
400 nm light
Which atom is larger: Na or Cl?
Na
Which atom attracts bonding electrons more strongly: O or S?
Oxygen
In a valid Lewis structure, which atom is generally placed in the center: the atom with the highest electronegativity or the atom with the lowest electronegativity?
The less electronegative atom
The reaction CaCO₃ → CaO + CO₂ begins with 50.0 g CaCO₃. If the molar mass of CaCO₃ is 100.1 g/mol, approximately this many moles of CO₂ can theoretically be produced.
0.500 mol CO₂
Calculate the frequency of electromagnetic radiation with a wavelength of 6.00 × 10⁻⁷ m.
5.00 × 10¹⁴ Hz
Arrange these atoms from smallest to largest atomic radius: Li, K, Na
Li < Na < K
A bond between atoms with electronegativities of 2.1 and 3.0 has a Δχ of this value?
0.9
How many total valence electrons are available for SO₄²⁻?
32 electrons
A reaction produces 18.5 g of product when the theoretical yield is 25.0 g. Calculate the percent yield.
74.0%
An electron has n = 3 and ℓ = 1. Name the orbital sublevel and state how many orbitals are found in that sublevel.
3p sublevel with 3 orbitals
Which requires more energy to remove an electron from a neutral atom: Mg or Na?
Mg
Rank these bonds from shortest to longest:
C≡C, C–C, C=C
C≡C < C=C < C–C
In a Lewis structure, an atom has 5 valence electrons, 2 nonbonding electrons, and 3 bonds. What is its formal charge?
0
Formal charge:
5 − (2 + 3) = 0
For 2H₂ + O₂ → 2H₂O, you have 6.00 g H₂ and 32.0 g O₂. Identify the limiting reactant and calculate the theoretical mass of H₂O produced.
O₂ and 36.0 g H₂O
An electron has the quantum numbers n = 4, ℓ = 3, mℓ = −2. What type of orbital does it occupy
4f orbital
Rank these species from smallest to largest radius:
O²⁻, F⁻, Na⁺, Mg²⁺
Mg²⁺ < Na⁺ < F⁻ < O²⁻
A molecule contains one triple bond. Compared with a single bond between the same two atoms, the triple bond has this type of bond strength and this type of bond length.
Stronger and shorter
How many resonance structures are commonly drawn for the nitrate ion, NO₃⁻, when the N–O double bond is allowed to occupy any of the three oxygen positions?
3 resonance structures