Comparison of Boron and Rhodium

Attribute	Rhodium ×	Boron ×
Atomic mass (u)	102.9055	10.81
Standard state	Solid	Solid
Oxidation states	+3	+3
Electron configuration	[Kr]5s¹4d⁸	[He]2s²2p¹
Atomic radius (van der waals) (pm)	195	192
Electronegativity (pauling scale)	2.28	2.04
Electron affinity (eV)	1.137	0.277
Ionization energy (eV)	7.459	8.298
Boiling point (K)	3968	4273
Melting point (K)	2237	2348
Density (g/cm³)	12.4	2.37
Atomic number	45	5
Group name	Transition metal	Metalloid
Discovered (year)	1803	1808
Symbol	Rh	B