Indicate the number of valence electrons in the following:
- Group 1
- an element with an electron configuration of 1s22s22p63s23p1
List the following elements in order of increasing electronegativity: O, Ge, C
Choose the atom or ion in each set with the smallest atomic radius.
- Li, Li+, H−
- Na+, Cl−, K+
- F, O2-, F−
List at least 2 ions with each of the following electron configurations:
What is the term for two ions with the same electron configuration?
Draw Lewis structures for the following compounds: (Follow the Octet Rule.)
- diphosphorus dichloride
- dinitrogen tetroxide
Indicate the molecular geometry of compounds (a)-(d) in question 6. For each of these compounds, indicate whether they are polar or nonpolar.
Add hydrogen atoms and electrons in order to complete Lewis structures of the following compound: C3H6O (acetone; nail polish remover)
Explain the basis of a covalent bond. What makes a bond polar? What makes a molecule polar?
Which is a better predictor of chemical properties: Period number or Group number?
For each set below, indicate which bond would be the most polar:
- C - F, N - F, or O - F
- Si - F or C - F
Indicate the molecular geometry of the following compounds (which disobey the octet rule):
Indicate the hybridization of the following atoms:
- C in CH2I2
- C in CO2
- Xe in XeF4
- S in SF4
- C in CO32-
- P in diphosphorus dichloride
Indicate the number of sigma bonds and the number of pi bonds in the following molecules: