In this atomic model, what does a denser cluster of dots indicate?

Which pair of electron properties cannot both be known exactly at the same time?

Which particles occupy an atom's outermost shell?

When building a ground-state atom, where are added electrons placed first?

What is the maximum number of electrons the second energy level can hold?

Which energy level can hold a maximum of 32 electrons?

Which list includes all the sublevels in the third energy level?

A p sublevel can contain at most how many electrons?

In $2p^3$, what does the superscript tell you?

Which ground-state electron configuration matches the neutral atom shown?

For the neutral atom shown, how many electrons belong in the ring marked '?'?

Silicon has atomic number 14. Which is its ground-state electron configuration?

How many particles in this diagram would be represented as dots in a Lewis symbol?

An atom has the ground-state configuration $1s^{2}2s^{2}2p^{6}3s^{2}3p^4$. In which period does it belong?

How many outer-shell electrons does the element at A have?

Which statement best explains argon's low tendency to react?

The highlighted elements tend to behave similarly. What explains this?

Moving from lithium to neon across a row, what happens to the outer-shell electron count?

Which modern group contains the element represented by this neutral atom?

Which electron distribution matches this symbol for a neutral atom?