3.1 Combining Capacity and Naming Compounds Flashcards
what is the rule for electronic charge of molecules
Compounds have an electronic charge of zero, so the sum of all the combining capacities of a compounds elements must equal zero
What is the deal with elements combining capacity
Some elements have only one possible combining capacity, while others have multiple, and some have consistent capacities that have exceptions
What are the combining capacities of groups 1+2
Groups 1 and 2 have respective combining capacities of +1 and +2
What is the combining capacity of group 13
Group 13 has the combining capacity of +3
What is the combining capacity of group 17
Group 17 has a combining capacity of -1
What is the combining capacity of hydrogen
Hydrogen can have +1 or -1, it is +1 when combining with a nonmetal (in this case H is first in the formula) and it is -1 when combining with a metal (in this cause it appears second in the formula)
What is the combining capacity of oxygen
Oxygen is -2, except in peroxides like Ca2O2, where it is -1, peroxides follow the formula X2O2
What is the combining capacity of sulphide
Sulphide has a combining capacity of -2
What is up with the combining capacity of transition metals
Transition metals, Group 3-12, do not follow a straightforward pattern and many of them have the ability to form more than one positive ion.
What is up with the combining capacity of polyatomic ions
Complex or polyatomic ions like SO4-2have consistent combining capacities.
what are the two types of ionic compounds
there are two main types of ionic compounds: Binary Ionic Compounds, and Polyatomic Ionic Compounds
What are binary ionic compounds
Binary Ionic Compounds are a metal + a non metal
What are polyatomic Ionic compounds
Polyatomic Ionic Compounds are made from polyatomic ions
How do you name ionically bonded compounds
1) Name the metal first without changing its name
2) Name the non-metal and change its ending to “ide”
Ex: NaCl Sodium Chloride
How do you name covalently bonded compounds
1) Name the first element without changing its name
2) If there is more than one of this element, prefix the name with the appropriate numbering prefix
3) Name the last element and change its ending to “ide”
4) Prefix this last element’s name with the appropriate numbering prefix
Ex: N2O4 dinitrogentetroxide
