How many valence electrons does Cu2+ have?

Yes, copper only has 1 valence electron. Remember: valence electrons only include the electrons in the highest energy (n) shell.

Do all elements need 8 valence electrons stable?

Atoms need 8 electrons in their outermost shell for elements due to the Bohr-Bury rules one of which states that the outermost shell of an atom cannot contain more than 8 electrons in their outermost shell and also that an atom to gain stability needs at least 8 electrons in their outermost shell.

Is 8 valence electrons stable?

Atoms with 8 electrons in their valence shell have completely filled last orbitals and are therefore the most stable, as their electronic configuration is similar to that of the closest noble gas.

Why does copper have a different electron configuration?

There are two main exceptions to electron configuration: chromium and copper. In these cases, a completely full or half full d sub-level is more stable than a partially filled d sub-level, so an electron from the 4s orbital is excited and rises to a 3d orbital.

What is the valence electron of CU?

[Ar] 3d¹⁰ 4s¹
Copper/Electron configuration

What happens if an element has 8 valence electrons?

Atoms with 8 valence electrons (or 2, in the case of helium) are stable. They are unlikely to gain or lose electrons or to share electrons with other atoms. Noble gases do not react easily with other elements. Some don’t react at all.

What happens if an atom doesn’t have 8 valence electrons?

The octet rule refers to the tendency of atoms to prefer to have eight electrons in the valence shell (outer orbital). When atoms have fewer than eight electrons, they tend to react and form more stable compounds. When discussing the octet rule, we do not consider d or f electrons.

Why is 2 and 8 considered stable?

The octet rule refers to the tendency of atoms to prefer to have two and eight electrons in the valence shell. When atoms have fewer than eight electrons, they tend to react and form more stable compounds.

Why is Cu2+ stable?

In an aqueous solution, a Cu2+ ion is more stable than a Cu+ ion due to the fact that the Cu2+ ion has a high negative value of hydration enthalpy. Means that more energy is released when Cu2+ is dissolved in water than in the case of Cu+. Hence it’s more stable.

Why is cucu2+ more stable than cu+?

Cu2+ is more stable than Cu+, Explain. Cu 2+ is more stable than Cu +. Stability depends on the hydration energy (enthalpy) of the ions when they bond to the water molecules. The Cu 2+ ion has a greater charge density than Cu + ion and thus forms much stronger bonds releasing more energy.

What is the correct electron configuration for copper (Cu)?

Correct Electron Configuration for Copper (Cu) Half-filled and fully filled subshell have got extra stability. Therefore, one of the 4s2 electrons jumps to the 3d9. This give us the (correct) configuration of: 1s2 2s2 2p6 3s2 3p6 3d10 4s1. For the Cu+ ion we remove one electron from 4s1 leaving us with: 1s 2 2s 2 2p 6 3s 2 3p 6 3d 10

What is the stable state of copper in Cu(II)?

Cu(II) is the stable state of copper. i Configuration 3 d 9 with one unpaired electron makes Cu(II) compounds paramagnetic. i Incomplete 3 d subshell permits d-d state-to-state electronic transitions, which causes color (typically blue or green). !

How many valence electrons does Cu (Cu) have?

Don’t look at that 1 electron in the 4s shell and assume that Cu has only 1 valence electron. Transition metals are a little different. Having no outer p shell electrons means that the d shell electrons can act as valence, and the metals can oxidize in different ways. This is really what makes metals metals.