Atomic Structure
Location of subatomic particles in the atom
Protons: Nucleus
Neutrons: Nucleus
Electrons: shell/ Cloud
The most stable group on the periodic table is
Noble gases
groups 3-12 are called
transition metals
How many electrons fit in 1 orbital?
2
How many electrons in a Sr2+ ion?
36
Atoms never vary in the number of THIS subatomic particle.
Protons
This group forms +2 ions
Alkaline earth metals
Most solid elements (at room temperature) are classified as...
metals
What is a shorthand configuration?
Using a noble gas first to highlight the valence shell of an atom.
How many neutrons exist in Pb-180?
98
Isotopes contain the same number of _____ and ______ but differ in ________.
Protons; electrons; neutrons
This group is the most reactive on the periodic table
alkali metals
Most liquids and gases are classified as...
nonmetals
How many orbitals fit in the p sublevel?
3
Is [Ne} an acceptable shorthand configuration for Neon? Explain
No because you cannot use a noble gas as it's own configuration.
Ions contain different number of _______.
Electrons
This group forms -1 ions
Halogens
This classification of elements contain key properties from both metals and nonmetals
Metalloids
What is the correct order of orbitals filling according to the Aufbau principle? (1s, 2s, etc.) up to 4s
1s, 2s, 2p, 3s, 3p, 4s
How are ions related to the octet rule?
Atoms form ions to achieve a full, stable, valence shell
Cations are __________.
Anions are ___________.
Positive; negative
Which group has a lower melting point 1 or 2?
An atom that is brittle and slightly conductive would be categorized as a..
metalloid
What is the shorthand electron calcium
[Ar]4s2
How many orbitals fit in the 2n shell?
4