Electron Shells

Question 1

An atomic orbital is

Answer 1

a region of space around the nucleus where an electron is most likely to be found. Each orbital can hold a maximum of two electrons with opposite spins.

Question 2

The cloud of negative charge of electrons is in the shape of what

Answer 2

the orbitals

Question 3

SCIENTISTS CAN NEVER BE CERTAIN OF THE EXACT LOCATION OF ELECTRON ORBITAL 95% PROBABILITY

Question 4

What are the subshells called

Answer 4

P,S,D,F

Question 5

LEARN P AND S ORBITALS ASHAPE

Answer 5

The s orbitals are spherical in shape
The size of the s orbitals increases with increasing shell number

E.g. the s orbital of the third quantum shell (n = 3) is bigger than the s orbital of the first quantum shell (n = 1)

Question 6

Subshells contain one or more atomic orbitals
Orbitals exist at specific energy levels and electrons can only be

Answer 6

found at these specific levels, not in between them
Each atomic orbital can be occupied by a maximum of two electrons

Question 7

S ORBITAL SHAPE

Answer 7

The s orbitals are spherical in shape
The size of the s orbitals increases with increasing shell number
E.g. the s orbital of the third quantum shell (n = 3) is bigger than the s orbital of the first quantum shell (n = 1)

Question 8

P ORBITAL SHAPE

Answer 8

The p orbitals have a dumbbell shape

Every shell has three p orbitals except for the first one (n = 1)

The p orbitals occupy the x, y and z axes and point at right angles to each other, so are oriented perpendicular to one another

The lobes of the p orbitals become larger and longer with increasing shell number

Question 9

The …………….is the most stable electronic configuration of an atom which has the lowest amount of energy
This is achieved by filling the subshells of energy with the lowest energy (1s)

Answer 9

Ground state