Secondary names

Cobaltous nitrate hexahydrate; Nitric acid, cobalt(2+) salt hexahydrate

CAS number

10026-22-9

18.0

	Formula	Name	Family	Number min-max	Mole fraction	Isotope mole fraction	State	Relevance
	$Co^{2+}$	Cobaltous cation	element	1	0.1111111111111111	1	constituent cation	main
	$(NO_3)^-$	Nitrate anion	chemical function	2	0.2222222222222222	1	anionic radical	main
	$H_2O$	Water	molecule	6	0.6666666666666666	1	hydration	main

Composition comments

better described as hexaaquacobalt(II) nitrate, [Co(OH_2)_6]^{2+}[NO_3]^-_2

Chemical functions

	Function	Number
	$(NO_3)^-$	2
	$R-OH$	2

Chemical bonds

	Bond	Number
	$\cdot Co^{2+} \cdot O^{-}-$	2
	$-O-H$	2
	$\dddot - \dddot - N^+ \dddot - O^{-2/3}$	3

Class

normal salts (07)

Type

hydrated simple normal salts (07.04)

Phase type

crystalline

Crystal system

monoclinic

Comments

consists of discrete $[Co(OH_2)6]^{2+} and [NO_3]^−$ ions

Refringence type

biaxial

Refraction index $n_{\alpha}$

1.52

Pure color

red

Links

• Wikipedia webpage