Elements and Atoms
This element has 37 electrons
What is Rubidium.
The name of K2SO3 is __________
What is potassium sulfite
The formal charge on sulfur in the best Lewis structure for SO32- is ______________
What is 0
The trend on the Periodic Table for ionization energy is this ____________
What is an: increase from LEFT to RIGHT (due to valence shell stability) and a DECREASE from TOP to BOTTOM (due to electron shielding).
The number of pi bonds in HCN is ___________
What is 2
The element, Ag3+, has this number of protons (p), electrons (e), and neutrons (n)
What is 47 (p), 44 (e), and 61 (n)
The number of significant figures in 100.0100 is __________
What is 7.
The oxidation state of Sn in K2Sn(OH)6 is ____________
What is +4
The element with the lowest electron affinity in Period 2 is ____________
What is Neon
Ne, Be, N, B, Li, C, O, F : note the exceptions: Be and C
The wavelength of light is 2.8 x 10-6 m at this frequency _____________ (s-1)
What is 1.07 x 1014 s-1
The number of electrons in the 3p orbitals of Cobalt (Co) is ___________
What is 6 electrons
The name of HClO4 is ______________
What is perchloric acid
Consider the reaction, Ag (s) + H2S (aq) --> Ag2S (g) + H2 (g). The reducing agent is _________ and it is __________ in the following reaction
What is Ag and oxidized
This element in Group IIA has the smallest atomic radii
What is Be2+
The nonpolar solvent, CCl4, makes for a good solvent for these types of compounds
What are nonpolar compounds (like dissolves like)
The number of magnesium atoms in 5.0 g of MgCl2 is ___________ (MW MgCl2 = 95.21 g/mol).
What is 3.16 x 1022 Mg atoms
A 15.5 mL solution of 10.0 M HCl is diluted with water to a final concentration of 4.3 M HCl. The volume of water required to dilute this solution is _____________
What is 20.5 mL (V2 = 36.0 mL; 36.0 mL - 15.5 mL)
The formal charge on each atom of BF4- is _________
What is B = -1, and F = 0
The bond angle of SO2 is ___________
What is < 120o
Electrons in an orbital with l = 2 are in this orbital ___________
What is a d-orbital
This element has the following ground-state configuration, [Ar]4s23d104p2
What is Germanium (Ge).
A block of lead has a density of 5.65 g/cm3 and a volume of 0.126 L. This block has a mass of ________ (g).
What is 712 g
The reaction, 2HBr (aq) + Mg (s) --> H2 (g) + MgBr2 (aq), best describes this type of reaction(s)
What is a gas-forming reaction, what is a redox reaction, and a replacement reaction
The molecular geometry of SF4 is ____________
What is seesaw
Between the substances CCl4, NaCl, and CH3COOH, the one with the highest boiling point is ___________
What is NaCl