???

???
	28 Ni
	?????? ← ??? → ?????
	??? in the ???? ????
???????
	lustrous, metallic, and silver with a gold tinge ;
??? ???????
???, ????? , ????	???, Ni, 28
????	/ ? n ? k ?l / NIK -?l
???? ????	transition metal
???? , ????? , ????	group 10 , 4 , d
?????? ????? ???	58.6934(4)(2)
???????? ?????	[ Ar ] 3d 8 4s 2 or [ Ar ] 3d 9 4s 1 (see text) ; 2, 8, 16, 2 or 2, 8, 17, 1
???? ???????
????? (near r.t. )	8.908 g·cm ?3
Liquid density at m.p.	7.81 g·cm ?3
???? ??????	1728 K ,?1455 °C,?2651 °F
???? ??????	3003 K,?2730 °C,?4946 °F
Heat of fusion	17.48 kJ·mol ?1
Heat of vaporization	379 kJ·mol ?1
???? ????? ??????	26.07 J·mol ?1 ·K ?1
Vapor pressure
????? ???????
????? ????	4 , 3, 2 , 1 , -1 ; (mildly basic oxide)
???? ?????	1.91 (Pauling scale)
?????????? ????????? ; ( ???? )	1st: 737.1 kJ·mol ?1
	2nd: 1753.0 kJ·mol ?1
	3rd: 3395 kJ·mol ?1
Atomic radius	124 pm
???? ????? ????	124±4 pm
Van der Waals radius	163 pm
???????
????? ????	face-centered cubic
???????? ?????	ferromagnetic
???? ???????	(20 °C) 69.3 nΩ·m
?????? ??????	90.9 W·m ?1 ·K ?1
?????? ??????	(25 °C) 13.4 μm·m ?1 ·K ?1
???? ?? ????? (???? ????)	( r.t. ) 4900 m·s ?1
Young's modulus	200 GPa
Shear modulus	76 GPa
Bulk modulus	180 GPa
Poisson ratio	0.31
Mohs hardness	4.0
Vickers hardness	638 MPa
Brinell hardness	700 MPa
CAS registry number	7440-02-0
?????
Discovery	Axel Fredrik Cronstedt (1751)
First isolation	Axel Fredrik Cronstedt (1751)
?? ?? ????? ?????? ?? ??? (???????)
	Main article: Isotopes of ???
	Decay modes in parentheses are predicted, but have not yet been observed
	? ; ? ; ? ; · references

??? ??? ??????? ???? ?? ?? ???? ??? ???? ???? ???

???? ??????

???? ?? ?????

????? ???

↑ Carnes, M.? ????? (2009)? "A Stable Tetraalkyl Complex of Nickel(IV)"? Angewandte Chemie International Edition? 48 : 3384? doi : 10.1002/anie.200804435
↑ Pfirrmann, S.? ????? (2009)? "A Dinuclear Nickel(I) Dinitrogen Complex and its Reduction in Single-Electron Steps"? Angewandte Chemie International Edition? 48 : 3357? doi : 10.1002/anie.200805862

[1] Carnes, M.? ????? (2009)? "A Stable Tetraalkyl Complex of Nickel(IV)"? Angewandte Chemie International Edition? 48 : 3384? doi : 10.1002/anie.200804435

[2] Pfirrmann, S.? ????? (2009)? "A Dinuclear Nickel(I) Dinitrogen Complex and its Reduction in Single-Electron Steps"? Angewandte Chemie International Edition? 48 : 3357? doi : 10.1002/anie.200805862

[1]

[2]