Copper's valence shell configuration is responsible for it's premier conductivity among metals. It's thermal conductivity is second only to silver, because the single atom in it's outermost valence s orbital interacts readily to fill the shell with the relatively stable configuration of two electrons. Copper was one of the earliest known metals, having reportedly been mined for over 5000 years. In nature it has two isotopes, 63 (69.09%), which has 29 electrons and protons and 34 neutrons, and 65 (30.91%), which has 29 electrons and protons and 36 neutrons. Brass and bronze are alloys of copper. Please Share/Save This Page. Contains 29 protons. A neutral copper atom must therefore have 29 electrons distributed amongst its various shells. Shells k, 1, and m are filled to capacity with a total of 28 electrons, so there is only one electron in the n shell. The outermost shell of an atom, the n shell in this case, is called the valence shell, and the number of. There are 5 orbitals in d subshell And for d subshell the maximum number of electrons is 10. There is only one d subshell in the copper atom and it is full. Copper has only one unpaired electron. Copper has 18 core electrons. Well core electrons is the number of total electrons minus valence electrons so.Phosphorus has 18 electrons and 5 valence electrons so 18 - 5 = 13 so there are 13.
a) How many electrons pass through the light bulb each second?
b) What is the current density in the wire? (answer in A/m^2)
c) At what speed does a typical electron pass by any given point in the wire? (answer in m/s)
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. Number of electrons in 5.0C = 5.0 / 1.60^-19 = 3.125^19
. 5.0 A ►= 3.125^19 electrons/s
b) A/m² = 5.0 / π(1.025^-3 m)² .. .. ►= 1.52^6 A/m²
c) Charge density (q/m³) = 8.50^28 e/m³ x 1.60^-19 = 1.36^10 C/m³
(q/m³)(m²)(m/s) = q/s (current i in C/s [A])
(m²) = Area
(m/s) = mean drift speed
(q/m³)(A)(v) = i
v = i.[(q/m³)A]ˉ¹
v = 5.0 [1.36^10 * π(1.025^-3 m)²]ˉ¹.. .. ►v = 1.10^-4 m/s
Protons In Copper
-Number Of Electrons In Copper Outer Shell