WebElements Periodic Table of the Elements | Praseodymium

Properties of praseodymium atoms

Ionisation Energies and electron affinity

The electron affinity of praseodymium is 50 kJ mol^-1. The ionisation energies of praseodymium are given below.

Ionisation energy number	Enthalpy /kJ mol^-1
1st	527
2nd	1020
3rd	2086
4th	3761
5th	5551

Ionisation energies of Pr

Electronic configuration

The following represents the electronic configuration and its associated term symbol for the ground state neutral gaseous atom. The configuration associated with praseodymium in its compounds is not necessarily the same.

Ground state electron configuration: [Xe].4f³.6s²
Shell structure: 2.8.18.21.8.2
Term symbol: ⁴I_9/2

Kossel shell structure of Pr
A schematic representation of the shell structure of praseodymium - not what the atom of praseodymium "looks like".

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Ce	Pr	Nd
Th	Pa	U

Praseodymium	Praséodyme
Praseodym	Praseodymium
Praseodimio	Praseodimio
Praseodym	Prosedímio

Praseodymium
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Praseodymium around us
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Chemistry and compounds
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- Reactions of praseodymium: reactions of praseodymium with air; water; halogens; acids; and bases
- Electronegativities: Pauling; Sanderson; Allred Rochow; Mulliken-Jaffe; and Allen
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1	2															3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18

1 H																															2 He
3 Li	4 Be																									5 B	6 C	7 N	8 O	9 F	10 Ne
11 Na	12 Mg																									13 Al	14 Si	15 P	16 S	17 Cl	18 Ar
19 K	20 Ca															21 Sc	22 Ti	23 V	24 Cr	25 Mn	26 Fe	27 Co	28 Ni	29 Cu	30 Zn	31 Ga	32 Ge	33 As	34 Se	35 Br	36 Kr
37 Rb	38 Sr															39 Y	40 Zr	41 Nb	42 Mo	43 Tc	44 Ru	45 Rh	46 Pd	47 Ag	48 Cd	49 In	50 Sn	51 Sb	52 Te	53 I	54 Xe
55 Cs	56 Ba	57 La	58 Ce	59 Pr	60 Nd	61 Pm	62 Sm	63 Eu	64 Gd	65 Tb	66 Dy	67 Ho	68 Er	69 Tm	70 Yb	71 Lu	72 Hf	73 Ta	74 W	75 Re	76 Os	77 Ir	78 Pt	79 Au	80 Hg	81 Tl	82 Pb	83 Bi	84 Po	85 At	86 Rn
87 Fr	88 Ra	89 Ac	90 Th	91 Pa	92 U	93 Np	94 Pu	95 Am	96 Cm	97 Bk	98 Cf	99 Es	100 Fm	101 Md	102 No	103 Lr	104 Rf	105 Db	106 Sg	107 Bh	108 Hs	109 Mt	110 Ds	111 Rg	112 Cn	113 Uut	114 Fl	115 Uup	116 Lv	117 Uus	118 Uuo

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