Si les configurations électroniques : a) 1 s^2, 2 s^2, 2 p^6, 3 s^1 b) 1 s^2, 2 s^2, 2 p^6,

step 1 In this question we've been given some electronic configurations and we've been asked to determi

Si les configurations électroniques : a) 1 s^2, 2 s^2, 2...

Si les configurations électroniques : a) $1 \mathrm{~s}^2, 2 \mathrm{~s}^2, 2 \mathrm{p}^6, 3 \mathrm{~s}^1$ b) $1 \mathrm{~s}^2, 2 \mathrm{~s}^2, 2 \mathrm{p}^6, 4 \mathrm{~s}^1$ sont celles de deux atomes neutres, ces trois affirmations sont-elles exactes? Sinon, laquelle est fausse? A) (a) et (b) représentent deux éléments différents. B) (a) représente le sodium. C) Il faut fournir de l'énergie à l'atome pour passer de (a) à (b).

Si les configurations électroniques :
a) $1 \mathrm{~s}^2, 2 \mathrm{~s}^2, 2 \mathrm{p}^6, 3 \mathrm{~s}^1$
b) $1 \mathrm{~s}^2, 2 \mathrm{~s}^2, 2 \mathrm{p}^6, 4 \mathrm{~s}^1$
sont celles de deux atomes neutres, ces trois affirmations sont-elles exactes?
Sinon, laquelle est fausse?
A) (a) et (b) représentent deux éléments différents.
B) (a) représente le sodium.
C) Il faut fournir de l'énergie à l'atome pour passer de (a) à (b).

Labs

Want to see this concept in action?

NEW

Explore this concept interactively to see how it behaves as you change inputs.

View Labs

Key Concepts

Electronic Configuration

Electronic configuration is the arrangement of electrons in the orbitals of an atom. It follows principles like the Pauli exclusion principle and Hund’s rule to determine how electrons occupy different energy levels, thereby influencing the chemical and physical properties of elements.

Aufbau Principle

The Aufbau principle describes the process by which electrons fill orbitals beginning with the lowest energy levels before moving to higher ones. This systematic order is essential for predicting the ground state configuration of atoms and understanding periodic trends.

Orbital Energy Ordering

Orbital energy ordering refers to the sequence in which atomic orbitals are arranged by increasing energy. In neutral atoms, electrons typically occupy lower energy orbitals first, which aids in determining the ground state configuration, although relative energies of orbitals can sometimes shift under different conditions such as ionization or excitation.

Excited States and Energy Promotion

Excited states occur when electrons absorb energy and move from a lower to a higher energy orbital, deviating from the lowest energy (ground state) configuration. The concept of energy promotion is crucial for understanding how atoms can transition between different electronic configurations when energy is absorbed or released.

Transcript

Please give Ace some feedback