Protons, Neutrons, Electrons, Valence Electrons
What charge does a proton, neutron, and electron have?
Proton = (+) positive
Neutron = no charge
Electron = (-) negative
How many electrons can the 1st and 2nd orbital hold?
1st orbital: 2
2nd orbital: 8
Neon (Ne) can be found in which period and group?
Period 2, Group 18
What does an element's atomic number tell you?
The # of protons
How old am I?
28
How many protons, neutrons, and electrons does Sodium (Na) have?
11 protons
12 neutrons
11 electrons
Sketch a Bohr Model for Carbon.
Two orbitals - 2 electrons in first orbital, 4 electrons in outermost orbital.
How many valence electrons does an element in Group 13 have?
Group 13: 3 Valence Electrons
7 periods
How many siblings do I have?
2 Brothers
What is the equation for finding the number of neutrons?
atomic mass - # of protons = # of neutrons
Sketch a Bohr Model for Magnesium.
Three Orbitals: 3 electrons in first orbital, 8 in second, 2 valence electrons in third.
What group(s) is/are the most reactive and least reactive on the Periodic Table?
Most: Groups 1 & 17
Least: Group 18
How many elements have been discovered so far?
118
What college did I go to?
UIC
What do you notice about the # of VE as you go from left to right on the periodic table?
They increase by 1 valence electron.
Draw the Bohr model for Silicon (Si) and state how many
1. protons
2. neutrons
3. electrons
4. valence electrons
1. protons = 14
2. neutrons = 14
3. electrons = 14
4. valence electrons = 4
Which element is least reactive? Neon (Ne) or Lithium (Li)? Why?
Neon is least reactive because it is found in group 18 which means that it has 8 valence electrons. If it has 8 electrons, the orbital is full and will not bond with other elements.
What is the definition of an "element"?
Element: a pure substance that is only composed of one type of particle.
What do I teach outside of school?
Dance
What do you notice about the # of VE as you go from top to bottom on the periodic table?
The number stays the same.
It is the same number as the Group # (eliminating the transition metals in the middle of the table).
What is the octet rule?
When an atom's outermost orbital has all 8 electons.
Is Lead (Pb) more similar to Tin (Sn) or Caesium (Cs)? Explain.
Lead is more similar to Tin because they are located in the same group and family, thus they have similar properties to one another.
What is electronegativity?
The measure of an atom's ability to attract electrons.
What career did I plan on having before switching to teaching?
Doctor