{[ promptMessage ]}

Bookmark it

{[ promptMessage ]}

Chemistry Week 7 Group Problems

Chemistry Week 7 Group Problems -...

Info iconThis preview shows pages 1–2. Sign up to view the full content.

View Full Document Right Arrow Icon
7.33 Careful spectrum analysis shows that the familiar yellow light of sodium lamps (such as street lamps) is made up of photons of two wavelengths, 589.0nm and 589.6nm. What is the difference in energy (in joules) between photons with these wavelengths? Answer: E=hv, E=hc/&lambda; E<sub>1</sub>=6.63x10<sup>-34</sup>J s(3x10<sup>8</sup>m/s)/(589.0nm x 1x10<sup>-9</sup>m) E<sub>1</sub>=3.377 x 10<sup>-19</sup>J E<sub>2</sub>=6.63x10<sup>-34</sup>J s(3x10<sup>8</sup>m/s)/(589.6nm x 1x10<sup>-9</sup>m) E<sub>2</sub>=3.373 x 10<sup>-19</sup>J E<sub>1</sub> - E<sub>2</sub>=3.377 x 10<sup>-19</sup>J - 3.373 x 10<sup>- 19</sup>J = 4 x 10<sup>-22</sup>J 7.83 Write the ground-state electron configurations for the following elements: B, V, Ni, I Answer: B: 1s<sup>2</sup>2s<sup>2</sup>2p<sup>1</sup> V: 1s<sup>2</sup>2s<sup>2</sup>2p<sup>6</sup>3s<sup>2</sup>3p<sup>6</sup>4s<s
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full Document Right Arrow Icon
Background image of page 2
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: up>2</sup>3d<sup>2</sup> Ni: 1s<sup>2</sup>2s<sup>2</sup>2p<sup>6</sup>3s<sup>2</sup>3p<sup>6</sup>4s<s up>2</sup>3d<sup>8</sup> I: 1s<sup>2</sup>2s<sup>2</sup>2p<sup>6</sup>3s<sup>2</sup>3p<sup>6</sup>4s<s up>2</sup>3d<sup>10</sup>4p<sup>6</sup>5s<sup>2</sup>4d<sup>10</sup>5p<sup >5</sup> 8.37 On the basis of their positions in the periodic table, select the atom with the larger atomic radius in each of the following pairs: (a) Na, Cs; (b) Be, Ba; (c) N, Sb; (d) F, Br; (e) Ne, Xe. Answer: (a) Cs (b) Ba (c) Sb (d) Br (e) Xe 8.59Arrange the elements in each of the following groups in increasing order of the most positive electron affinity: (a) Li, Na, K; (b) F, Cl, Br, I. Answer: (a) K, Na, Li (b) I, Br, F, Cl...
View Full Document

{[ snackBarMessage ]}