Chapter 6-periodic Table Flashcards
How we’re elements in mendeleev’s periodic table arranged?
Properties and atomic mass
What is mendeleev’s periodic law?
Properties of elements are a periodic function of their atomic masses
What is today’s periodic law?
The properties of elements are a periodic function of their atomic numbers
A single column is called a _____ or _____
Group or family
What does a family contain?
Elements that have similar but not identical properties
What family occupies the first column in the periodic table?
Alkali metals
What are alkali metals?
These metals are the most reactive metals in the periodic table because of the single electron in the outer orbit
What family is located in the second column of the periodic table?
Alkaline earth metals
What family is located in the 16th column of the periodic table?
Chalcogen family
What family is located in the 17th column on the periodic table?
Halogen family
What family is in the 18th column of the periodic table?
The noble gases
Why are they called noble gases?
Because they do not generally form compounds with other elements. They are unreactive because their outer orbits are completely filled with electrons
What are rows in the periodic table called?
Periods
What do periods demonstrate?
Periods show trends, left side to the right side of the table the elements change from metals to non metals and to gases
