Scientists
Who is the Russian chemist who put together the first periodic table?
Dmitri Mendeleev
What is the amplitude of a wave?
The distance from the origin to the crest
What make an ionic bond?
A cation and anion or a metal and non-metal.
How many groups/families are on the periodic table?
18
What is the Octet Rule?
Chemical compounds tend to form so that each atom has an octet of electrons in its highest occupied energy level.
Who though electrons orbited the nucleus like planets orbit the sun?
Neils Bohr
What speed do electromagnetic radiations propagate at?
The speed of light (3.0 X 10^8 m/s)
What is a metal alloy?
A homogeneous mixture of 2 or more elements, with at least 1 metal
What is Periodic Law?
States that when the elements are arranged by increasing atomic number, there is a periodic repitition of their properties
Covalent bonds
Who created the Plum Pudding Model of an atom?
What is the electron configuration of Carbon?
1s^2 2s^2 2p^2
What is the formula of dichromate?
Cr2O7-2
What is the most electronegative element?
Fluorine
What are exceptions to the octet rule?
Hydrogen is satisfied with 2 electrons and B is satisfied with 6. Expanded valences can exceed the rule and have more than 8 electrons.
What Louis deBroglie discover?
Electrons travel through space as waves
What is the orbital shape of P?
a dumbbell
What is a coordination number and what does it determine?
What is the correct pattern of atomic radius size, decreasing on the periodic table?
Decreases from top to bottom and right to left
What is bond character of elements with a 1.3 difference in electronegativity?
Polar covalent
Who was Ernest Rutherford?
He conducted the Gold Foil Experiment that discovered the nucleus
The principle that says that electrons occupy the orbitals of lowest energy first
The Aufbau Principle?
What are the charges of the two transition elements that only have one oxidation state?
Zn+2 and Ag+
What are the names of the two series of inner transitions metals at the bottom of the periodic table?
The lanthanide and actinide series
What is they geometry of BCL3?
Trigonal Planar