The diagram illustrates separate beams of electrons and protons moving through an electric field.
Add the relative charge on each electrically charged plate to complete the diagram.
On the diagram, add a line showing how a separate beam of neutrons from the same source travels through the same electric field.
In atoms up to $^{36}\text{Kr}$, electrons are arranged in s, p and d orbitals.
State how many occupied orbitals there are in an isolated atom of $^{36}\text{Kr}$. Fill in the table for s, p and d orbitals.
Complete the diagram to show the number and relative energies of the electrons in an isolated atom of $^{14}\text{Si}$.
The diagram shows one type of orbital. State the total number of electrons present in all orbitals of this type in an atom of $^{9}\text{F}$.
The first ionisation energies of the elements in the first row of the d block ($^{21}\text{Sc}$ to $^{29}\text{Cu}$) are very similar. In each case, the electron removed in the first ionisation is a $4\text{s}$ electron. Suggest why these first ionisation energies are so similar.
Hydron is a general term used to refer to the ions $^{1}\text{H}^{+}$, $^{2}\text{H}^{+}$ and $^{3}\text{H}^{+}$. State, in terms of subatomic particles in the nucleus, what is identical about each ion and what differs.