Untitled Notes

List of Compounds:
- 27 Nickel sulfide
- 28 Aluminum phosphide
- 29 Tin (IV) iodide
- 30 Zinc nitrite
- 31 Chromium (III) bromide
- 32 Iron (II) oxide
- 33 Ammonium thiosulfate
- 34 Arsenic (V) hydroxide
- 35 Sodium carbonate
- 36 Titanium (III) cyanide
Molecules and their Oxidation Numbers:
- 37 Ca(NO3)2:
  - Name of Molecule: Calcium Nitrate
  - Oxidation Numbers:
  - Ca: +2
  - N: +5
  - O: -2
- 38 Co3(PO4)2:
  - Name of Molecule: Cobalt (II) Phosphate
  - Oxidation Numbers:
  - Co: +2
  - P: +5
  - O: -2
- 39 (NH4)2Cr2O7:
  - Name of Molecule: Ammonium Dichromate
  - Oxidation Numbers:
  - N: -3
  - H: +1
  - Cr: +6
  - O: -2
- 40 NiBr2:
  - Name of Molecule: Nickel (II) Bromide
  - Oxidation Numbers:
  - Ni: +2
  - Br: -1
- 41 Ba(PO4)2:
  - Name of Molecule: Barium Phosphate
  - Oxidation Numbers:
  - Ba: +2
  - P: +5
  - O: -2
- 42 Fe2(SO4)3:
  - Name of Molecule: Iron (III) Sulfate
  - Oxidation Numbers:
  - Fe: +3
  - S: +6
  - O: -2
- 43 Ca3N2:
  - Name of Molecule: Calcium Nitride
  - Oxidation Numbers:
  - Ca: +2
  - N: -3
- 44 Al(SO3)3:
  - Name of Molecule: Aluminum Sulfite
  - Oxidation Numbers:
  - Al: +3
  - S: +4
  - O: -2
- 45 Fe(OH)3:
  - Name of Molecule: Iron (III) Hydroxide
  - Oxidation Numbers:
  - Fe: +3
  - O: -2
  - H: +1
- 46 SnCl4:
  - Name of Molecule: Tin (IV) Chloride
  - Oxidation Numbers:
  - Sn: +4
  - Cl: -1

An element with the electron configuration 1s 2s 2p 3s 3p will ionize to a(n)…
- a. both anion and cation
- b. anion
- c. noble gas
- d. cation
The oxidation numbers for Cr and O are:
- a. Cr=5+, O=-1
- b. Cr=6+, O=1-
- c. Cr=5+, O=2-
- d. Cr=6+, O=2-
In a crystal of sodium chloride, each Na+ and Cl- ion has clustered around it…
- a. 6
- b. 4
- c. 2
- d. 1
Which of the following molecules have an ionic bond?
- a. CH4
- b. H2O
- c. NaI
- d. CO2
Which element typically bonds with other elements by receiving only 1 electron per atom?
- a. B
- b. Si
- c. S
- d. Br

The oxidation numbers for Na2O2 are:
- a. Na=1+, O=1-
- b. Na=2+, O=2-
- c. Na=2+, O=1-
- d. Na=1+, O=-2
Which of the following situations will cause the element with the electron configuration 1s²2s 2p 3s² to have an octet configuration?
- a. gain of six electrons
- b. loss of two electrons
- c. gain of three electrons
- d. loss of eight electrons
An ionic bond is…
- a. a force that holds together atoms that are oppositely charged.
- b. the movement of electrons from one atom to another.
- c. attraction of an atom for its electrons.
- d. attraction of atoms for electrons they share.
The overall charge of a formula unit for an ionic compound…
- a. may have any value
- b. is always zero
- c. is always positive
- d. is always negative
Which of the following compounds does not contain a polyatomic ion?
- a. sodium carbonate
- b. sodium sulfite
- c. sodium sulfide
- d. sodium sul
A chemist wants to estimate the strength of the chemical compound. Which property of the compound will give the chemist the best estimate of the force?
- a. molecular mass
- b. melting point
- c. density
- d. solubility

17 Oxygen (O)
- Atomic Number: 8
- Atomic Mass: 16
- Number of Protons: 8
- Number of Neutrons: 8
- Number of Electrons: 8
- ION: O^2- (Anion)
18 Phosphorus (P3-)
- Atomic Number: 15
- Atomic Mass: 31
- Number of Protons: 15
- Number of Neutrons: 16
- Number of Electrons: 18
- ION: P^3- (Anion)
19 Tin (Sn)
- Atomic Number: 50
- Atomic Mass: 118.71
- Number of Protons: 50
- Number of Neutrons: 69
- Number of Electrons: 50
- IONS: Sn^4+ (Cation)
20 Antimony (Sb3+)
- Atomic Number: 51
- Atomic Mass: 121.76
- Number of Protons: 51
- Number of Neutrons: 71
- Number of Electrons: 48
- ION: Sb^3+ (Cation)