History of the Atom
The scientist that originally organized the periodic table according to increasing atomic number.
Who is Henry Moseley?
Name an element that is most likely to ionize by losing two electrons?
What is Be, Mg, Ca, Sr, Ba, or Ra?
What element would have a larger atomic radius Cs or Na?
What is Cs?
The scientist that organized the periodic table according to atomic mass.
Who is Dmitri Mendeleev?
Scientist that said there is nothing smaller than an atom.
Who is John Dalton?
Transition metals are elements of groups...
What are groups 3-12.
The energy required to remove electrons from an atoms is known as what trend?
What is ionization energy?
What element would have the higher ionization energy: N or F?
What is F?
How many periodic families make up the "A" group?
What is 8 periodic families.
An atom with a charge is known as...
What is an ion?
True or False: The atomic radius of atoms tend to decreases from period 1 to period 7.
What is False?
What element has a higher electron affinity O or B?
What is O?
Which family includes members that are all non-metals, are highly reactive, will form salts with the Alkali metals, and have 7 valence electrons (only needing 1 more) ?
What is the Halogens or group 17 (7A)?
Discovered there areas or rings where electrons orbit the nucleus
Who is Bohr?
A measure of the ability of an atom in a chemical compound to attract or "pull" electrons
What is electronegativity?
True or False: The ionization energy of iodine is greater than fluorine.
What is False?
The Alkali metals belong to this group.
What is group 1?
In a single period of the periodic table, where is the most Metallic metal, with the largest atomic radius?
What is the element closest to the left hand side?
Discovered the proton using a "Gold-Foil" experiment.
Who is Rutherford?
The number of valence electrons in Group 15 elements is...
What is 5?
Identify 2 known metalloids.
What are Boron, Silicon, Germanium, Arsenic, Antimony, and Tellurium
Classify the following as either a metal, metalloid or a nonmetal: 1. Si 2. Na 3. Al
What is a metalloid, metal, metal?
A periodic family that has a full outermost valence shell and rarely reacts with other elements.
What is the noble gases?