Video Solution: Which of the following has the largest number of unpaired el...

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Which of the following has the largest number of unpaired electrons?

a) 15P

b) 22Ti

c) 30Zn

d) 13Al

e) 26Fe

Of the first row transition elements listed below, which is or are diamagnetic?

(1) Ti (#22) (2) Fe (#26) (3) Zn (#30)

a. (1) and (2) only

b. (1) and (3) only

c. (2) and (3) only

d. only (1) OR only (2) OR only (3)

e. (1), (2) and (3) - all three

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Which element has the most unpaired electrons in the orbital set indicated by parentheses?

a. carbon (p)

b. barium (s)

c. oxygen (p)

d. vanadium (d)

e. chlorine (p)

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Which of the following individual atoms has a paramagnetic electronic structure?

1. Be

2. Mg

3. Li

4. Ne

5. He

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Give the electron configuration for each of the following elements and its ion. For the ion, state if it is  paramagnetic or  diamagnetic

Cr

 

Cr+

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Which of the following elements are diamagnetic?

I. H      II. He      III. Be     IV. B      V. C

 

a) I, II, III

b) II, III

c) II, III, IV

d) III, IV, V

e) I, III, IV

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How many unpaired electrons does an atom of fluorine have?

a) 3

b) 1

c) 2

d) 0

e) 4

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The ground-state electron configuration of an Fe2+ ion is

1s2 2s2 2p6 3s2 3p6 3d6

Therefore Fe2+ is

a) diamagnetic.

b) paramagnetic with one unpaired electron.

c) paramagnetic with two unpaired electrons.

d) paramagnetic with three unpaired electrons.

e) paramagnetic with four unpaired electrons.

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How many elements in the second row (period) of the Periodic Table are diamagnetic in atomic form?

a.  7

b.  1

c.  6

d.  0

e.  2

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Diamagnetic substances

a. are attracted to a magnetic field because they contain unpaired electrons.

b. are repelled by a magnetic field because they contain only paired electrons.

c. become permanently aligned in a magnetic field.

d. are not affected by a magnetic field.

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Species with unpaired electrons are paramagnetic and

a. are seldom found in compounds of Groups IA, IIA, and IIIA.

b. exist for at least one oxidation state of transition metals.

c. are attracted to a magnetic field.

d. each of these statements are true.

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Which of the following individual atoms has a paramagnetic electronic structure?

1. Be

2. Mg

3. Li

4. Ne

5. He

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Which of the following ions is paramagnetic?

A. Se2–

B. Ba2+

C. Pb4+

D. Ti2+

E. Zn2+

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Which of the following species is diamagnetic?

1. Ti2+

2. Ba

3. S

4. Ni2+

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