I am confused by the usage "Kr-33" in the main article on Krypton:

In 1960 it was internationally agreed that the fundamental unit of length, the metre, should be defined as 1 m = 1,650,763.73 wavelengths (in vacuo) of the orange-red line of Kr-33.

What does the 33 refer to?

The units of resistivity don't come out right.

10^-8 Ohm * m
or
m Ohm * cm

the 'm' should be a 'mu', but unfortunately they both look the same in the latin alphabet.

I need the Valence Number
Density
Relative Electro Negativity
Specific Heat
Atomic Radius
And the physical appearence at room temperature...