Parts of an Atom
What does the atomic number represent?
Number of Protons
How many valence electrons does Aluminum have?
3
What group of elements are known for having a shiny appearance
metals
This period contains 2 elements in it.
Period 1
Which element is the most electronegative element on the periodic table?
Fluorine (F)
What is located in the nucleus?
Protons and Neutrons
How many electron shells does Xenon have?
5
What is the name of group 1 elements?
alkali metals
What period has three electron shells?
period 3
As you move down the periodic table, how does atomic radius change?
it increases as you go down
Where are electrons located?
In the electron shells
around the nucleus
electron clouds
How many neutrons does Magnesium have (atomic #=12; atomic mass= 24.305 amu)
12 neutrons
Which group is known for being all gas elements?
group 8
Period 5
What does ionization energy represent?
The amount of energy required to remove an electron from a neutral atom
Up to how many electrons can exist for the following:
1st shell:________
2nd shell:_______
3rd shell: _______
1st shell: 2
2nd shell: 8
3rd shell: 8 (or 18)
Draw a bohr model for Nitrogen
Which group has seven valence electrons? *You must name the group name as well as number*
group 7- Halogens
What does n represent?
The energy level or period number
Describe what electronegativity represents and how it changes left to right and up to down
The tendency/ability of an atom to attract electrons
left to right- increases
top to bottom- decreases
Name the 4 parts of an atom and their charges.
Protons (positive)
Electrons (negative)
Neutrons (neutral)
Nucleus (positive)
Draw a bohr model for Chlorine
A new element is discovered and is found to have properties of conductor of heat and electricity. What could this element be categorized as?
What is our formula for calculating the maximum number of electrons in a shell?
2n2
How does the ionic radius change when an element becomes a cation?
Cations will become smaller (overall positive charge on the atom so electrons are pulled closer to the nucleus)