What is the electron configuration representing an atom of aluminum in an excited state?

Wavelength You use the Rydberg formula to calculate the wavelength, λ: $color(blue)(bar(ul(|color(white)(a/a) 1/λ = RZ^2(1/n_2^2 -1/n_1^2)color(white)(a/a)|)))" "$ where $R =$ the Rydberg constant ($1.097 × 10^7color(white)(l)...

The element is "excited", so it still has all its electrons. The element contains 17 electrons. It must be element with 17: chlorine.

Phosphorus has $15$. As such its electronic configuration in ground state is $1s^2 2s^2 2p^6 3s^2 3p^3$ The following electronic configurations could be excited states $1s^2 2s^2...

The excited state of an atom occurs when it has absorbed energy. When this happens, an electron can jump to a higher energy level, which is very unstable, before dropping...

.........does it take you more energy to climb from the bottom of the stairs, than from 3 steps up the flight of stairs? Quite clearly it does. When...

Aluminium can release three electrons (don't be confused; electrons are released one by one) at most, so we call it trivalent. Whenever Aluminium releases a electron, It needs a minimum...

An excited state means that (typically) the valence electron has moved from its ground state orbital (i.e. lowest available energy) to some other higher energy orbital. So any in which...

An electron configuration representing an atom in the excited state will show a valence electron promoted to a higher energy level. Example The ground state electron configuration of sodium is...

If the sodium is ionised, the outer $3s^1$ electron is lost, so the configuration becomes $1s^2 2s^2 2p^6$, which is the same as neon, $Ne$.

1 mole of aluminum oxide has a molecular weight of 102 grams (Al=27 grams and O=16 grams). It means that for 1000 kg of compound you can get 529 kilograms...