History and Organization of The Periodic Table
The scientist who formualted periodic law and organized the periodic table by atomic mass.
Who is Dimitri Mendeleev
Atoms in the same column share the same number of...
What are valence electrons?
Ionization energy changes as you go across a period? And WHY?
What increases due to the increase of protons attracting electrons more making them harder to remove.
Which atom has the highest electronegativity?
Fluorine
The biggest difference between atomic and ionic radius is that...
What is:
atomic radius measures neutral atoms while ionic radius measures the size of ions.
An element is classified as shiny and malleable but is a poor conductor of electricity, this atom is a...
What is a metalloid?
This is the most reactive group of NON-Metal atoms on the periodic table. Provide the group number, name, and, number of valence electrons.
What is group 17 the halogens 7 valence electrons.
Which element on the periodic table has the greatest Ionization Energy?
What is Fluorine?
Which of the following will have a higher electronegativity than arsenic (As)?
a. Carbon (C)
b. Neon (Ne)
c. Antimony (Sb)
d. Germanium (Ge)
What is carbon?
An atom that has gained electrons will be ____________ than its neutral atom
what is larger or bigger?
Periodic Law states that
When organized by atomic number, atoms show similarities in their properties and characteristics.
This rule states that atoms will gain or lose valence electrons to resemble the noble gasses with a full shell of electrons.
What is the octet rule?
These atoms have high IE and the electrons are __________ to remove.
Non-metals, harder
Electronegativity increases when you go....
- Be specific where direction is concerned
Up a group and across a period from left to right.
Which element on the periodic table has the greatest Atomic Radius?
What is Francium
This scientist is attributed with organizing the periodic table by atomic number
Who is Henry Mosely?
Atoms in the same period share the same number of...
IE decreases going down a column why is this/
More electron shells weaken the attraction the protons have on the electrons
How is electronegativity defined:
The ability of tendency for an atom to gain electrons
Place the following atoms in order of increasing radius.
Cl- F- , I-,
F- , Cl-, I-
Valence electron are important for one major reason...
What is:
- They are the outermost electrons involved in bonding.
This atom is an exception to the noble gasses valence electrons what is it and why?
Helium only has two valence electrons filling the first electron shell, which still gives it noble gas properties despite not having 8 valence electrons.
The order of Ionization energy from least to greatest for Magnesium, Phoshporus, Oxygen, Cesium.
What is Cs, Mg, P, O
If carbon has an electronegativity of 2.55, what do you expect oxyges electronegativity to be? AND WHY?
answer as less than, greater than, or equal to.
Oxygen should be greater than carbon as it has more nonmetal properties and willl want to attract electrons more to create a full octet.
OR
The more protons in oxygen pulls electrons closer strengthening the attraction making it easier to attract protons.
The order of Atomic Radius from least to greatest for Magnesium, Phoshporus, Oxygen, Cesium.
What is O, P, Mg, Cs