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Chapter 6

Q. 6.6

Find the electron configurations of the sulfur and iron atoms.

ANALYSIS
identity of the atoms Information given:
atomic number of the atoms
Figure 6.10; energy diagram
Information implied:
electron configurations for (a) S and (b) Fe Asked for:

STRATEGY

1.  Find the atomic numbers of S and Fe in the periodic table.
S: atomic number = 16; Fe: atomic number = 26
2. Use Figure 6.10 and fill the appropriate sublevels.
Remember 4s fills before 3d.

fig 6.10

Step-by-Step

Verified Solution

1s^{2}2s^{2}2p^{6}3s^{2}3p^{4} (a) S
1s^{2}2s^{2}2p^{6}3s^{2}3p^{4}4s^{2}3d^{6} (b) Fe

END POINT

Use the periodic table to check your answer. See Figure 6.11 and the accompanying discussion.

fig 6.11