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Week 4

Introductory Chemistry

AnswerQuestion
elements are arranged in order of increasing atomic number, those with similar chemical What is the rational for the organization of the periodic table
Alkali Metals What groups constitute the:IA
Calcogens What groups constitute the:VIA
Halogens What groups constitute the:VIIA
Alkaline Earth Metals What groups constitute the:IIA
Noble Gases What groups constitute the:VIIIA
most metallic character Group IA Which groups on the periodic table possess the most metallic and nonmetallic character?
most metallic character Cs and Fr Which elements are considered to possess the least metallic and the most metallic character?
Fluorine is the most reactive nonmetal and Cs is the most reactive metal. Which individual elements on the periodic table are the most chemically reactive metal and nonmetal element?
nonmetals What kind of element generally has a low melting and boiling point temperatures.
metals What kind of element generally conducts electricity and heat well.
metalloid or semimetal What kind of element increases its capacity to conduct electricity when heated.
The highest principle energy level s sub-energy level fills before the d orbitals of the next It is generally true that all transition elements can have at most 2 valence electrons.
Atoms will gain or lose electrons to fill their outermost s and p sub-energy levels. Once filled the typical How can the octet rule be used to predict the charge of an ion?
H2, N2, O2, F2, Cl2, Br2, I2 & At2 List the elements that typically exist as diatomic molecules. (two atoms per molecule)
Br2 & Hg What two elements exist as liquids at room temperature?
He, Ne, Ar, Kr, Rn, H2, N2, O2, F2, Cl2 What elements exist as gases at room temperature in their natural form?
Silver What element is the best electrical conductor on the periodic table?
Aluminum What element is used in electrical transmission cable?
Tungsten and Uranium are the hardest What are the hardest and most dense elements on the periodic table?
Silver, gold, platinum are often referred to as noble metals due to their stability in air. Aside from the Noble gas elements, what elements are particularly notable for the nonreactive character?
A measure of the relative size of an atom. Atomic Radius:
A measure of the relative size of an ion. Ionic radius:
Minimum energy required to remove an electron to form First Ionization Energy:
Energy required or released by addition of an electron to an Electron Affinity:
Metals typically lose electrons in chemical reactions. The Metallic Character:
When the elements are arranges in order of increasing relative mass, certain sets of properties recur periodically What is periodic law
1.Good Conductors 2.Malleability 3.Ductility 4.Shiny and tend to lose electrons when undergo chemical changes 5.Located the upper right side Properties of Metals
1. Occupy the upper right side 2.solids at room temp or gases 3.poor conductors of heat and electricity 4. Tend to gain electrons during chemical reactions Characteristic of nonmetals
electrons not in the outermost principle shell what are core electrons
the electrons in the outermost principle shell What are Valence electrons
Created by: Natasha Scientist Natasha Scientist on 2008-02-16



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