Number of Protons

heeeelllllllooooooooooooooooooooo o well

Yes - I think Molybdenum, the 42nd element is the first element with electrons in the fifth or O shell.

It has 42 Protons, 42 Electrons and 54 Neutrons



http://www.chemicalelements.com/elements/mo.html

Name: Molybdenum
Symbol: Mo
Atomic Number: 42
Atomic Mass: 95.94 amu
Melting Point: 2617.0 °C (2890.15 °K, 4742.6 °F)
Boiling Point: 4612.0 °C (4885.15 °K, 8333.6 °F)
Number of Protons/Electrons: 42
Number of Neutrons: 54
Classification: Transition Metal
Crystal Structure: Cubic
Density @ 293 K: 10.22 g/cm3
Color: silverish
Number of Energy Levels: 5

First Energy Level: 2
Second Energy Level: 8
Third Energy Level: 18
Fourth Energy Level: 13
Fifth Energy Level: 1

http://users.rcn.com/jkimball.ma.ultranet/BiologyPages/E/Elements.html

e.g.

ok i need to know what the opimom amount you can have on the fifthe is

I have no idea what the word opimom means in English sorry!

But if you mean how many electrons can you fit in the the 5th shell 32 is the answer!

e.g. Nobelium - element 102

http://www.webelements.com/webelements/elements/text/No/econ.html

Ground state electron configuration: [Rn].5f14.7s2
Shell structure: 2.8.18.32.32.8.2
Term symbol: 1S0



PS

typing Uranium periodic table -> google, selecting first hit and selecting ;ast element on the periodic table Nobelium and selecting electronic configuration gave the answers you required in about 45 seconds all up!

sorry that was optimom

Optimum maybe?- hint google is the best spell checker in the world - far better than Word for guess and correcting what your meant!

but is 32 the o.. most

# of shells
From an xray spectroscopic point of view, there are an infinite number of shells in an atom, albeit they are concentrated just below the fermi surface.