Atomic Notation & Bohr Diagrams
Draw the Bohr diagram for Carbon.
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What is an orbital?
A 3D shape of where up to two electrons will dwell around the nucleus. Can be in the shape of a sphere, a dumbbell, or more complex.
Define ion, cation, and anion.
Ion: Atom with a charge
Cation: Positively charged atom
Anion: Negatively charged atom
Give 2 properties of ionic compounds.
High melting point, high boiling point, brittle.
What is a covalent bond?
Identify the element with the atomic number 27 and write its atomic notation.
Cobalt
How many electrons can fit in the p subshell?
6
What is the ionic charge of oxygen?
-2
Name this compound: NaS
Sodium sulfide
How many lone pairs of electrons does H2O have?
2
Atomic Notation on the board.
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What is the electron configuration for Oxygen?
1s22s22p4
What type of structure do ionic compounds typically form in a solid state?
Lattice structure
Write the chemical formula for magnesium phosphide.
Mg3P2
Which is more electronegative: Nitrogen or Oxygen?
Determine the number of protons, neutrons, and electrons in Cl-35.
P: 17
N: 18
E: 17
Write the full and noble gas electron configurations for Nickel.
1s² 2s² 2p⁶ 3s² 3p⁶ 4s² 3d⁸
[Ar] 3d⁸ 4s²
Explain (or draw out) how ionic bonds form using the elements sodium and chlorine as an example.
One electron from sodium is transferred to the chlorine atom, so that both have a full valence shell. The sodium takes on a positive charge, while the chlorine takes on a negative charge. Because of the differences in charge, they form a bond.
Name this compound: Fe(NO₃)₃
Iron (III) Nitrate
Is carbon dioxide a polar or nonpolar molecule? Why?
Nonpolar. Although it contains polar bonds, the geometry is symmetrical and therefore there is no "polarization" on the molecular level. The electronegative tendencies "cancel out".
Why is the atomic mass shown on the Periodic Table a decimal?
How many electrons are in the n=3 energy level?
18
Explain how we came up with the ionic charge for the groups on the Periodic Table.
Atoms form ions based on the number of electrons in the valence shell. They seek to have a total of 8 and take the most "convenient" path to make that happen (whether it be losing or gaining electrons). Changing the # of electrons causes a change in charge.
What is the chemical formula when Aluminum (III) and Sulfate bond?
Al2(SO4)3
Draw the Lewis structure for C2H6S
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