Question

the cu+ 2 salts are​

Answer 1

Explanation:

As we know that the unpaired electrons present in the ion show color due to the transition of the electrons from ground state to the excited state. salts are colorless.

Answer 2

Answer : Because do not contain any unpaired electron whereas contain one unpaired electron.

Explanation:

Atomic number of copper is 29.

The electronic configuration of copper will be,

The electronic configuration of will be,

The electronic configuration of will be,

As we know that the unpaired electrons present in the ion show color due to the transition of the electrons from ground state to the excited state.

In case of there is no unpaired electrons that means the shells are fully filled. So, it will not show any color. That's why  salts are colorless.

Whereas In case of ,  there is one unpaired electron. That's why  salts are colorful.

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