ELECTRON CONFIGURATION

Question 1

An ______ is a region of space where
there is a probability of finding the
electrons.

Answer 1

ORBITAL

Question 2

QUANTUM MECHANICAL MODEL BY ERWIN SCHRODINGER DONT MOVE AROUND IN ORBITS INSTEAD

Answer 2

ELECTRON CLOUD

Question 3

The ________ shows the specific arrangement of electrons in the orbitals of an atom.

Answer 3

electron configuration

Question 4

An _______ is a region of space where there is a probability of finding the electrons

Answer 4

ORBITAL

Question 5

is described with a notation
or symbol that contains three important
information.

Answer 5

ELECTRON CONFIGURATION

Question 6

First, the number of energy level or the shell

1s2

Answer 6

energy level

i.e., 1, 2, 3…

Question 7

Second, the letter that describes the orbital
type or the subshell/sublevel which can either
be

Answer 7

s, p, d, or f (shape of the orbital).

subshell

Question 8

Third, the superscript shows the number of
electrons in a specific subshell. (Each
subshell can only occupy a specific maximum
number of electrons.)

Answer 8

number
of electrons
in the subshell

Question 9

Aufbau principle is used to reproduce the
electron configurations of the ground states of
atoms by successively filling the sublevels
with electrons in a specific order.
In other words, the electrons in an atom are
filled in increasing order of energies.

Answer 9

AUFBAU PRINCIPLE

1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6…

Question 10

Its first two electrons
would fit in the lowest
energy possible, 1s
(1s2);
2. The next two
electrons would
occupy 2s (2s2);
3. The next six electrons
will go to 2p (2p6); and
4. One more electron to
3s (3s1), accounting
for a total of 11
electrons.

Answer 10

Sodium (Na) = 11 e1s2 2s2 2p6 3s1

Question 11

Look for the atomic number of the
given element.
2. Follow the notation starting with the
lowest energy level until such time that
the number of electrons of the element
are distributed.
3. Check if the correct notation was
followed and add the total number of
electrons indicated by the
superscripts.

Answer 11

METHOD 1: LONG HAND CONFIGURATION