Paramagnetism and Diamagnetism

How many of the following species are paramagnetic? Sc3+           Br  –           Mg 2+           Se a. 0 b. 2 c. 1 d. 4 e. 3

Which of the following species is diamagnetic? 1. Ti2+ 2. Ba 3. S 4. Ni2+

Which of the following ions is paramagnetic? A. Se2– B. Ba2+ C. Pb4+ D. Ti2+ E. Zn2+

Which of the following individual atoms has a paramagnetic electronic structure? 1. Be 2. Mg 3. Li 4. Ne 5. He

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.

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.

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

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

An atom Fe has two 4s electrons and six 3d electrons. How many unpaired electrons would there be in Fe2+ ion? (A) one (B) two (C) three (D) four

Which of these species (is/are) paramagnetic? Ti4+          Fe2+          Zn° (A) Fe2+ only (B) Zn° only (C) Ti4+ and Fe2+ only (D) Fe2+ and Zn° only

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+

Which of the following individual atoms has a paramagnetic electronic structure? 1. Be 2. Mg 3. Li 4. Ne 5. He

Which of the following has the largest number of unpaired electrons? a) 15P b) 22Ti c) 30Zn d) 13Al e) 26Fe

Which of the following atoms has the largest number of unpaired electrons?A. SbB. SeC. ClD. NiE. Cd

The electron configuration of Gd is [Xe]4f 75d 16s 2. How many unpaired electrons are in this atom?a) 1b) 2c) 7d) 8e) 9

Using the noble gas shorthand, write the electron configurations of the following and provide the number of unpaired electrons in each.        a. O +        b. Al 3+        c. Zn 2+        d. Sr

The ground-state electron configuration of an Fe2+ ion is1s2 2s2 2p6 3s2 3p6 3d6. Therefore Fe2+ isa) 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.

A cobalt atom would be expected to have _____ unpaired electrons.a) 0b) 1c) 2d) 3 e) 4

The number of unpaired electrons in the chromium atom (atomic number 24) is a) 0b) 2c) 4d) 6e) 16

How many unpaired electrons does an atom of fluorine have?a) 3b) 1c) 2d) 0e) 4

Which gas-phase atom has no unpaired electrons in its ground state?a) Lib) Bec) Bd) C

How many unpaired electrons are in an atom of Co in its ground state?a) 2b) 1c) 3 d) 7

Atomic nitrogen contains how many unpaired electrons, according to Hund’s rule?A. 1B. 0C. 2D. 3

The number of unpaired electrons in a neutral atom of iron (atomic number 26) is 1. none. 2. 1. 3. 3. 4. 2. 5. 4.

Choose the diamagnetic species. A. Ga 3+ B. Cr 2+ C. N D. I E. None of the above species are diamagnetic

Choose the diamagnetic species from below.  A. Sn2+                     B. Br               C. P                     D. Cr                 E. None are diamagnetic

Which of the following individual atoms has a paramagnetic electronic structure?1. Ne2. Mg3. He4. Be5. Li

For Vanadium (V), which of the following describes the three valence electrons in 3d:A.  The electrons are each unpaired and all are in degenerate orbitalsB.  Two electrons are paired and all are in degenerate orbitalsC.  Two electrons are paired and those two are in a degenerate orbitalsD.  The electrons are each unpaired and none are in degenerate orbitalsE.  The electrons are each unpaired and two are in degenerate orbitals

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)

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) onlyb. (1) and (3) onlyc. (2) and (3) onlyd. only (1) OR only (2) OR only (3)e. (1), (2) and (3) - all three

Which atom or ion below contains the most total unpaired electrons?A. PB. Cr3+C. Fe3+D. S2-E. Pb2+

Select the element (s) that will have one unpaired electron in p orbital?a. Arb. Sc. Mgd. Fe. Ga

Choose the paramagnetic species from below:a. Cd 2+b. O2-c. Nb3+d. Ca

Choose the paramagnetic species from below.a. Seb. Ti4+c. Ard. All of the above are paramagnetic.e. None of the above are paramagnetic.

How many unpaired electrons does an atom of carbon have in its ground state?a. 1b. 2c. 3d. 4

Determine the number of unpaired electrons for argon.

Rank these transition metal ions in order of decreasing number of unpaired electrons. Indicate if any overlap.Fe3+, Ni2+, Cu+, V3+, Mn4+

How many unpaired electrons does oxygen have?

In the ground-state electron configuration of Fe 3+ , how many unpaired electrons are present?

The electron configuration of Gd is [Xe]4f75d16s2. How many unpaired electrons are in this atom?A. 1B. 2C. 7D. 8E. 9

Give the complete electron configuration of cobalt, Co, the complete or abbreviated electron configuration, of Co2+, and Co3+, and predict the number of unpaired electrons in all three.

Classify each of these ions as diamagnetic or paramagnetic.Cu2+Ni2+Zn2+Co2+

Classify each of these ions as diamagnetic or paramagnetic.Zn2+Ni2+Cu2+Co2+

a. Write the condensed electron configurations for the Ga atom. Express your answer in condensed form in order of increasing orbital energy as a string without blank space between orbitals. b. Indicate how many unpaired electrons the Ga atom has.

Indicate the number of unpaired electrons present in each of the following atoms.a. Scb. Mnc. Se

Select the diamagnetic ion.a. Mn2+b. Fe3+ c. P-d. Co2+e. Ni2+f. V3+g. O-h. Cu+i. Mg+