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Chapter 6: Q.86E. (page 338)

Explain why Al is a member of group 13 rather than group 3?

Short Answer

Expert verified

Aluminum falls in the p block, in which elements have 3 valence electrons in the p orbital and group 13 has a single electron in a subshell.

Step by step solution

01

Groups in the periodic table

The vertical columns in the periodic table are called groups.

An element is present in its respective group because of its two aspects, chemical properties, and valence electrons.

Elements with valence electrons 1, 2, 3, 4, 5, 6, 7, 8 are in group 1, 2, 13, 14, 15, 16. 17, 18 respectively. Properties vary as alkaline earth metals are placed in group 2. Similarly, elements in group 15 are pnictogens. Elements in group 16 are chalcogens. Elements in group 17 are halogens.

02

Aluminum is a member of group 13

Aluminum falls in the p block, in which elements have 3 valence electrons in the p orbital and group 13 has a single electron in their valence shell.These fulfill the criteria of the characteristics of aluminum.

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Most popular questions from this chapter

Question:Which ion with a +1 charge has the electron configuration 1s22s22p63s23p63d104s24p6? Which ion with a 鈥�2charge has this configuration?

Identify the subshell in which electrons with the following quantum numbers are found:

(a)n= 2,l= 1

(b)n= 4,l= 2

(c)n= 6,l= 0

Identify the subshell in which electrons with the following quantum numbers are found:

(a)\({\bf{n = 3,l = 1}}\);

(b)\({\bf{n = 5,l = 3}}\);

(c)\({\bf{n = 2,l = 0}}\).

Question:Which atom would be expected to have a half-filled 6psubshell?

Question:Which of the following equations describe particle-like behavior? Which describe wavelike behavior? Do any

involve both types of behavior? Describe the reasons for your choices.

(a)c=位谓

(b)E=尘谓2

2

(c)r=n2a0

Z

(d)E = h谓

(e)位=h

尘谓
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