Complete the following statements by writing one of these words or phrases in each
blank
$$
\begin{array}{ll}
\text { analogies } & \text { particle } \\
\text { calculated for hydrogen } & \text { particle interpretation } \\
\text { cloud } & \text { positions } \\
d & \text { possible } \\
\text { decreased } & \text { principal } \\
\text { definitely } & \text { probabilities } \\
\text { diminishes } & \text { probably } \\
\text { electron configuration } & \text { s orbitals } \\
\text { exactly } & \text { seven } \\
\text { five } & \text { seventh } \\
\text { high percentage } & \text { spherical } \\
\text { hydrogen } & \text { spinning } \\
\text { impossible } & \text { spins } \\
\text { inner transition metals } & \text { spontaneously returns } \\
\text { intense } & \text { strange } \\
\text { intensity of the movement } & \text { strength } \\
\text { intensity of the negative charge } & \text { sublevel } \\
\text { mathematics } & \text { three } \\
\text { modern physics } & \text { three-dimensional } \\
\text { motion } & \text { two } \\
n & \text { unpaired } \\
\text { negative charge } & \text { volume } \\
\text { nine } & \text { wave } \\
\text { other elements } & \text { waveforms } \\
p \text { block } & \\
\end{array}
$$
All of the elements in the block with boron, B , neon, Ne , thallium, Tl , and radon, Rn , at the corners have their highest-energy electrons in $p$ orbitals, so this is called the _______ .