How do you know charges of elements?

There are four ways to find the charge of an element:

Use the periodic table. The usual charge of an element is common to its group.
Use a chart.
For a single atom, the charge is the number of protons minus the number of electrons.
Find the charge by balancing charge in a compound.

How many 3d electrons are in Zn?

10 electrons

How many 3d electrons are in FE?

five 3d electrons

Why is Fe3+ more stable than Fe2+?

The Fe 3+ ion more stable than Fe 2+ ion because due to his electronic configuration i.e the electronic configuration of Fe 3+ has half filled last orbital and we know that half or fulled filled orbitals are most stable and here Fe 2+ has not half or full-filled orbital so Fe 3+ ion more stable than Fe 2+ ion.

Why are electrons removed from 4s before 3d?

So because the 4s orbitals has the lower energy, it gets filled first. When 3d orbitals are filled, 4s is no longer lower in energy. Hence electrons are lost from 4s orbital first, because electrons lost first will come from the highest energy level (furthest away from the nucleus).

Do you write 3d before 4s?

Electrons usually enter the 4s orbital before the 3d because the 4s is initially lower in energy. However, from Scandium and onwards, the 3d orbital of transition metals actually becomes lower in energy than the 4s, which is why we write 3d before 4s in the configuration.

Why do we write 4s after 3d?

All Answers (10) The aufbau principle explains how electrons fill low energy orbitals (closer to the nucleus) before they fill higher energy ones. This means that the 4s orbital which will fill first, followed by all the 3d orbitals and then the 4p orbitals.

What is the shape of 5s orbital?

The shape of the 5s orbital. That on the left is sliced in half to show the four spherical nodes of the 5s orbital. The shape on the right shows the nodal structure of the 5s-orbital. While still spherical, the higher s-orbitals ( 6s, and 7s) are more complex since they have more spherical nodes.