Flashcards in General Chemistry- The Periodic Table Deck (189)
What is the most common scale to meausre electronegativity?
Pauling electronegativity scale
Electronegativity is what?
A relative measure
What is the range of the scale used to find electronegativity?
0.7 to 4.0
Which are the least and most electronegative elements?
How does electronegativity change on a periodic table?
Increase across a period from left to right
Decreases from top to bottom
What are the three increaseing factors on a periodic table from left to right?
What is the decreaseing factor on the periodic table from left to right?
What are the increasing factors on a periodic table from bottom to top?
What is the decreasing factor on the periodic table from bottom to top?
Which metals are the classic physical properties of metals?
What is the exception to the classic physical properities of metals seen in Alkali metals?
Density is lower than most metals
How many loosely bound electrons do the Alkali metas have in there outer most shell?
What trends are seen in Alkali metals?
(Zeff) values are very low
Largest atomic radii of all elements in their respective periods
Low ionization energies
Low electron affinities
Alkali metals lose one electron to form what?
Alkali metals react with _________, especially _________.
Nonmetals especially Halogens
Alkaline earth metals possess what?
Many properties charateristic of metals
What makes Alkaline metals different from Alkali?
Slightly higher effective nuclear charges and thus slightly smaller atomic radii
How many valence electrons does Alkaline metals have in the outer most shell?
What is formed when both electrons are removed from Alkaline metals?
Which two metal types make up Active metals? Why?
Alkali and Alkaline Earth Metals
They are so reactive that they are not naturally found in their elemental (neutal) state.
What are chalcogens?
Group VIA or Group 16
An eclectic group of nonmentals and metalloids
What are chalcogens crucial for?
Normal biological functions
Chalcogens are not as ______________________ as halogens.
What are characteristics of Chalcogens?
Six electrons in their valence shell
Small atomic radii
Large ionic radii
Why is oxygen the most important?
It is one of the primary consituents of water, carbohydrates, and other biological molecules.
Why is sulfur important?
Component in amino acids, and vitamins
Why is selenium important?
It is a Nutrient for microorganisms
What is important to know about the rest of the Chalcogens?
They are primarily metallic and generally toxic
In high concentrations, chalcogens are what?
Toxic or damaging