Of the choices below, which gives the order for first ionization energies?
Which of the following has the largest second ionization energy?
Which equation correctly represents the first ionization of aluminum?
a. Al(g) -> Al-(g) + e-
b. Al+(g) + e- -> Al(g)
c. Al(g) + e- -> Al-(g)
d. Al(g) -> Al+(g) + e-
e. Al-(g) -> Al(g) + e-
In general, as you go across a period in the periodic table from left to right: (1) the atomic radius __________; (2) the electron affinity becomes __________ negative; and (3) the first ionization energy ___________.
a. increases, increasingly, decreases
b. increases, increasingly, increases
c. decreases, decreasingly, increases
d. decreases, decreasingly, decreases
e. decreases, increasingly, increases
Which of the following correctly represents the electron affinity of bromine?
a. Br+(g) + e- -> Br(g)
b. Br2(g) + 2 e- -> 2 Br-(g)
c. Br(g) -> Br+(g) + e-
d. Br(g) + e- -> Br-(g)
e. Br2(g) + e- -> Br-(g)
Which of the following is not a characteristic of metals?
b. Low ionization energies
c. Acidic oxides
e. These are all characteristics of metals.
Alkali metals tend to be more reactive than alkaline earth metals because ____________.
a. alkali metals have greater electron affinities
b. alkali metals have lower melting points
c. alkali metals have lower ionization energies
d. alkali metals are not more reactive than alkaline earth metals
e. alkali metals have lower densities
Oxides of the active metals combine with water to form ____________.
The series that correctly lists from left to right a halogen, an alkaline earth metal, a transition metal, and an active metal is __________.
a. Br, Ba, Cr, Na
b. O, Ca, Ce, Al
c. F, Sr, Fe, Sn
d. S, Sr, Si, Sn
e. Cl, K, V, Mg
Hydrogen is unique among the elements because ____________.
1. It has only one valence electron.
2. It is the only element that can emit an atomic spectrum.
3. Its electron is not at all shielded from its nucleus.
4. It is the lightest element.
5. It is the only element to exist at room temperature as a diatomic gas.
a. 1, 2, 3, 4, & 5
b. 1, 3, & 4
c. 1, 2, 3, & 4
d. 2, 3, & 4
e. 3 & 4
This solution provides answers to each question along with descriptions regarding how the answer was chosen. A reference is also included to help understanding of the problem.