First-person to introduced the term atoms
Democritus
What is the distance from the center of an atom's nucleus to its outer most electron?
Atomic Radius
What is the name of element number 106 and what is the atomic number?
Seaborgium, 106.
What are the names of the groups that are the most reactive groups in the s-block of the periodic table of elements?
Alkali Metals, Alkaline Earth Metals
What does the term "valence" mean?
Outermost electrons
Model: Electrons in a positive cloud
Plum Pudding Model
What is the term that refers to the energy need to remove an atom's electron?
Ionization Energy
What element has an atomic mass of 238.
U, Uranium
Which group of elements play an important role in living organisms, and are also extremely valuable as strong, structural useful materials AND make up the d-block on the periodic table?
Transitional Metals
1S^2 is the electron configuration of what element?
Helium
How is the periodic table arranged today?
By atomic number.
What is the name of the term that describes the attraction of electrons?
Electronegativity
What is the name of the element with the elemental symbol Zr?
Zirconium
The elements boron (B), aluminum (Al), gallium (Ga), indium (In), and thallium (Ti), belong in which group?
Group 13
What is the electron configuration of Neon?
1s22s22p6
Model: Electrons in orbits around the nucleus
Planetary Model
Where is ionization energy the highest? Electronegativity?
Ionization --> He
Electronegativity -->F
Which element has 42 as its atomic number?
Mo, Molybdenum
Which elements belong in Group 14?
Carbon (C), Silicon (Si), Germanium (G), Tin (Sn), and Lead (Pb)
What is the electron configuration of sodium?
1s22s22p63s1
Model: Electrons located in probability zones.
Quantum Mechanical Model
Ionization energy ____________ as you go from left to right across a period and ___________ as you go from top to bottom of a family.
Increases, decreases.
What element has the elemental symbol Uuu?
Unununium
Name the group which contains the elements: Nitrogen (N), Phosphorus (P), Arsenic (As), Antimony (Sb), and Bismuth (Bi)
Group 15
What does the electron configuration of an element reveal about that element?
How the electrons are arranged in an atom.