Answer:
Explanation:
If an electron is in an excited state it can return to a lower energy level. When it does this, it loses energy. The amount of energy it loses will be equal to the difference in the energy levels it moves between. This energy is released as a photon.
<u>Answer:</u> The given metal is iron.
<u>Explanation:</u>
We are given:
The electrons in 3d-shell = 5
When the metal is present in a transition series (here it is present in first transition series), the removal of valence electron takes place from '4s' shell first and then from '3d' shell
Electronic configuration is defined as the representation of electrons around the nucleus of an atom.
Number of electrons in an atom is determined by the atomic number of that atom.
Inner shell electrons for the given element = 18
Total number of electrons in the ion = 18 + 5 = 23
We are given:
Charge on the ion = +3
To calculate the number of electrons, we use the equation:
Number of electrons = Atomic number - charge
Atomic number = 23 + 3 = 26
The element having atomic number '26' is iron
Hence, the given metal is iron.
Answer:
temperature, concentration, pressure
