Electron configurations notation

CHEMICAL SYMBOL ATOMIC NUMBER ORBITAL NOTATION Is 2s 2p ELECTRON CONFIGURATION NOTATION... 

Apply the Pauli exclusion principle, the aufbau principle, and Hund s rule to write electron configurations using orbital diagrams and electron configuration notation. 

Element Atomic number Orbital diagram Is 2s 2p 2py 2p Electron configuration notation... 

Note that electron configuration notation usually does not show the orbital distrihutions of electrons related to a suhlevel. It s understood that a designation such as nitrogen s 2p represents the orbital occupancy 2p 2py 2p. ... 

For sodium, the first ten electrons occupy Is, 2s, and 2p orbitals. Then, according to the aufbau sequence, the eleventh electron occupies the 3s orbital. The electron configuration notation and orbital diagram for sodium are written... 

Describe the electrons in an atom of nickel in the ground state using the electron configuration notation and the noble-gas notation. 

You can represent an atoms electron configuration using one of two convenient methods orbital diagrams or electron configuration notation. 

Element Atomic Number Orbital Diagram Is 2s 2px2py2pz Electron Configuration Notation... 

Personal Tutor For an online tutorial on electron configuration notation, visit glencoe.com. 

I Electron configurations can be represented using orbital diagrams, electron configuration notation, and electron-dot structures. 

When writing the electron configuration notation for an atom, what three principles or rules should you follow ... 

Which electron configuration notation describes an atom in an excited state ... 

Sodium s two bright lines have wavelengths of 588.9590 nm and 589.9524 nm. What is the ground-state electron configuration notation for sodium, and how does sodium s electron configuration relate to the lines ... 

Figure 11.14 Electron configuration notation. An electron configuration specifies the number of electrons in each sublevel for any specified atom. The value of n that represents the principal energy level is written first, followed by the letter that indicates the sublevel. The number of electrons in each sublevel is written as a superscript. 

Electron-configuration notation eliminates the lines and arrows of orbital notation. Instead, the number of electrons in a sublevel is shown by adding a superscript to the sublevel designation. The hydrogen configuration is represented by Is. The superscript indicates that one electron is present in hydrogen s Is orbital. The helium configuration is represented by Is. Here the superscript indicates that there are two electrons in helium s Is orbital. 

The number of electrons in a boron atom is equal to the sum of the superscripts in its electron-configuration notation 2 -I- 2 -I-1 = 5 electrons. The munber of protons equals the number of electrons in a neutral atom. So we know that boron has 5 protons and thus has an atomic number of 5. To write the orbital notation, first draw the lines representing orbitals. 

Write the complete electron-configuration notation, the noble-gas notation, and the orbital notation for the following elements ... 

Write the electron-configuration notation for the element whose atoms contain the following number of electrons ... 

In determining the electron configuration of an ion, the order in which electrons are removed from the atom is the reverse of the order given by the atom s electron-configuration notation. 

---