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Chapter 6: Q58E (page 336)

Question:Which of the following atoms contains only three valence electrons: Li, B, N, F, Ne?

Short Answer

Expert verified

Boron contains only 3 valence electrons.

Step by step solution

01

checking if Li and B have just three valence electrons or not  

Li has 1 electron in its 2s orbital. so, it has 1 valence electron. Boron has 2 electrons in 2s orbital, 1 electron in 3p. that accounts for a total of 3 valence electrons.

02

checking if N, F, and Ne have just three valence electrons or not  

N has a total of 5 valence electrons. F has a total of 7 valence electrons. Neon is an inert gas of group 18 and it has filled s and p orbitals, hence a total of 8 valence electrons.

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Most popular questions from this chapter

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

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

Give an example of an atom whose size is smaller than fluorine.

Question:Which atom has the electron configuration 1s22s22p63s23p63d74s2?

Question: State the Heisenberg uncertainty principle. Describe briefly what the principle implies.
See all solutions

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