Explain briefly how `+2` state become more and stable in the first half of the first row transition elements with increasing atomic number?

Explain briefly how +2 state becomes more and more stable in the first half of the first row transition elements with increasing atomic number?

Explain briefly how +2 state becomes more and more stable in the first half of the first row transition elements with increasing atomic number?

Explain briefly how +2 state becomes more and more stable in the first half of the first row transition elements with increasing atomic number?

Explain briefly how +2 state becomes more and more stable in the first half of the first row transition elements with increasing atomic number?

Explain briefly how +2 state becomes more and more stable in the first half of the first row transition elements with increasing atomic number?

Explain briefly how +2 state becomes more and more stable in the first half of the first row transition elements with increasing atomic number ?