Section 1 : Atomic structure - Electronic Structure Flashcards
Which two atomic particles are found in the nucleus?
Neutrons and Protons
The sum of which two atomic particles dictates the relative atomic mass of an element?
Neutrons and Protons
In atoms which two atomic particles are in an equal ratio to one another to give the atom its neutral charge?
Electrons and Protons
What charge does proton have?
+1
What charge does a neutrons have?
0
What charge does a electron have ?
-1
Where is the first energy level located in relation to the nucleus?
The first energy level is located closest to the nucleus.
Each energy level is split into sub levels , what are the names of these sub levels?
The S sub-level
The P sub-level
The D sub-level
The F sub-level
What does each sub level have?
Each sub level has orbitals , depending on which sub-level it is ( S, P, D or F) it will have different number of orbitals.
How many orbitals does the S sub-level have ?
1
How many orbitals does the P sub-level have ?
3
How many orbitals does the D sub-level have?
5
How many orbitals does the F sub level have?
7
How many electrons can each orbital contain?
2
How many electrons can the S sub shell hold?
2
How many electrons can the P sub shell hold?
6
How many electrons can the D sub shell hold?
10
How many electrons can the F sub shell hold?
14
What is meant by the bus seating rule?
When electrons fill orbitals they try to get 1 electron in each orbital before they start doubling up.
What is atomic radius?
The atomic radius is the distance from the nucleus to the outermost shell of electrons.
Atomic radius increases down a group but decreases across a group.
What is nuclear charge?
The nuclear charge is decided by the number of protons in the nucleus . Nuclear charge increases both down and across a group.
What is shielding?
Shielding is the number of electron shells an atom has, shielding remains constant with progression across a period but increases with progression down a group.
