Periodic Table History and arrangement
Who is the father of the Periodic Table, who initially organized the elements by mass?
(Dmitri) Mendeleev
Protons and neutrons are found in the center of the atom, known as the...
Nucleus
Titanium has 22 of these little guys
Protons
When electrons are exposed to energy, they jump up an energy level. When they fall back down, they release _______ usually in the form of ________.
energy, light/photons
I end in 1s2. What element am I?
Helium
Organize the following elements from least to greatest electronegativity: Ca F, Al, Sr
Sr, Ca, Al, F
Who won the baseball World Series this year?
The Texas Ranger
The person whose work led to a periodic table based on increasing atomic number was...
Moseley
Electrons are found whizzing around the outside of the atom. We don't know exactly where they are, but there's a chance of finding them in an area known as the...
Electron cloud
The Atomic mass minus the Atomic number =
The number of neutrons of an atom?
How many electrons can be found in an orbital?
Two
My full electron configuration is 1s2 2s2 2p2. What element am I?
Carbon
Which element has higher ionization energy? Carbon or aluminum
Carbon
What is the substance that fills our old radiators in school to make them warm?
Elements are put into rows by increasing _____
Atomic Number (number of protons)
What is the mass (in amu) of an atom of Aluminum with 11 neutrons in its nucleus?
Al = atomic number 13 = 13 protons
13 protons + 11 neutrons = mass of 24 amu
The electrons in the outer-most energy level are known as...
Valence electrons
Two electrons in the same orbital canNOT be spinning the same way (spin up/spin down). This rule is known as...
The Pauli Exclusion Principle
Write the full electron configuration for Sodium.
1s2 2s2 2p6 3s1
Which element has a larger atomic radius - Sulfur or Chlorine?
Sulfur
What is the name of a deceased world-famous scientist who failed algebra, but whose discoveries also led to the invention of the atomic bomb?
Albert Einstein
What are the horizontal rows called?
Periods
Atoms with different numbers of neutrons but the same number of protons are known as...
Isotopes
The atomic number is equal to this on a neutral atom - two things!
The number of protons and electrons
The only noble gas without 8 valence electrons in its outermost energy level.
He
Write the electron configuration for Aluminum
1s2 2s2 2p6 3s2 3p1
Why does atomic radius increase as we go down the periodic table?
We add an energy level to the outside of our electron.
Which animal has the largest brain of any animal on earth?
The Sperm Whale
What are the vertical columns called and how are they numbered?
Groups (1-18)
The mass of atoms is measured in amu. What does amu stand for?
Atomic Mass Units
Number of periods on the periodic table.
What is 7?
The 2nd energy level only contains 8 electrons. This means that it only contains which two subshells?
s with 2 electrons, p with 6 electrons
My electron configuration ends in 5d9. What element am I?
Gold
How many valence electrons do the noble gases have in their outermost energy level?
8 electrons (the maximum amount according to the octet rule)
Inside of what tropical fruit does Spongebob Squarepants liv?
A pineapple
Why do elements in the same group have similar chemical properties?
They have the same number of valence electrons
The distance from the nucleus of an atom to the edge of its electron cloud is known as its...
Atomic radius
The number of protons in an atom of calcium.
What is 20?
How many orbitals are found in the 4d subshell?
5
My electron configuration ends in f4. Which two elements could I be?
Neodymium or Uranium
If an atom with 2 valence electrons loses both electrons, what will its charge be? (+1, -3, neutral, etc.)
+2
What was this past Tuesday, November 7th?
Election day
More like electron day am I right