How many valence electron does element copper has?

Answer 1

2
The answer is 1 or two but:-

Copper has an electronic configuration of [Ar] 3d10 4s1

Copper is a transition metal and the simple concept of valence electrons is difficult to apply to these. You could say 1, expecting the 4s electron to be lost, which does happen to form Cu+ , cuprous, compounds. However copper readily forms Cu2+ in cupric compounds, e.g. in copper sulfate. In these one of the d electrons is also lost to give a d9 configuration.

Other oxidation states such as copper (III) and copper(IV) are known.

Answer 2

The number of Valence electrons in an atom depend on the location in the Periodic Table. The table is organized into groups, or columns, and periods, or rows. The groups are labeled at the top, from left to right, 1A, 2A, 3B, 4B, 5B, 6B, 7B, 8B, skip, skip, then 1B, 2B, 3A, 4A, 5A, 6A, 7A, and 8A. Only the As matter when you are thinking of Valence electrons. If you're looking for the number of valence electrons in Calcium (Ca), you look for the group name. In this case, it's in group 2A, this means it has two valence electrons.

So Copper (Cu) has two valences. Cu I (cuprous) has one valence electron and Cu II (cupric) has two valence electrons.

Answer 3

The electronic configuration of copper is2, 8, 18, 1 or [Ar] 3d10 4s1 and it has one valence electron.

Answer 4

That depends on the copper; it's a transition metal, and thus the number of valence electrons can vary, ala Copper[I]/Copper[II]/Copper[IV].

Answer 5

Copper is a transition metal. It has a normal valance of two, but it can have a one valance electron count.

Answer 6

Copper's atomic number is 29. Thus, it has 29 protons and 29 electrons. It's electron configuration is 1s2 2s2 2p6 3s2 3p6 4s1 3d10, meaning it has 1 valence electron in the 4th energy level.

Answer 7

1