rules of naming binary molecular compounds: describe the first word

the prefix describes the number of atoms in the first element + element name

rules of naming binary molecular compounds: describe the second word

the prefix describes the number of atoms in the second element; the suffix is -ide

prefix for "4 of" is __.

tetra-; think "tetrad has 4 sister chromatids"

Name of a monatomic cation rule:

Name of element, followed by the word ion

Name of a monatomic anion rule:

Name of element changed to end in -ide, followed by the word ion

the symbol for the zinc ion, a TRANSITION ELEMENT, is always:

Zn2+. Note that this is the only common charge, so th charge is not included in the name 'zinc ion'.

the symbol for the mercury(I) ion is a special case:

it is a diatomic (two-atom) ion: Hg22+

Define an IONIC COMPOUND.

Ionic compound: A combination of cations and anions that form a crystalline solid. Must be electrically neutral.

How to Write the Formula of an Ionic Compound?

1. write cation formula + anion formula 2. do subscripts to make sum of charges equal to zero, using parens for polyatomic ions needed more than once

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CHEM139.4

CH6 lecture

Question	Answer
Compounds formed by two nonmetals or a metalloid and a nonmetal are called __ __ __.	binary molecular compounds
What are the 7 elements that occur in nature as diatomic molecules?	H2 N2 O2 F2 Cl2 Br2 I2
rules of naming binary molecular compounds: describe the first word	the prefix describes the number of atoms in the first element + element name
rules of naming binary molecular compounds: describe the second word	the prefix describes the number of atoms in the second element; the suffix is -ide
prefix for "2 of" is __.	di-
prefix for "3 of" is __.	tri-
prefix for "4 of" is __.	tetra-; think "tetrad has 4 sister chromatids"
prefix for "5 of" is __.	penta-; think "pentagon"
prefix for "6 of" is __.	hexa-; think "hexagon"
prefix for "7 of" is __.	hepta-
prefix for "8 of" is __.	octa-; think "octamom"
prefix for "9 of" is __.	nona-
prefix for "10 of" is __.	deca-; hink "decathlon"
rules of naming binary molecular compounds:list an exception 1 of 2	H2O is water
rules of naming binary molecular compounds:list an exception 2 of 2	NH3 is ammonia
Name of a monatomic cation rule:	Name of element, followed by the word ion
Name of a monatomic anion rule:	Name of element changed to end in -ide, followed by the word ion
Charge for Group 1A:	+1
Charge for Group 2A:	+2
Charge for Group 3A:	+3
Charge for Group 5A:	-3
Charge for Group 6A:	-2
Charge for Group 7A:	-1
All transition-element ions have a ____ charge.	positive
What three TRANSITION ELEMENTS occur with only one charge?	Ni2+, Zn2+, Ag+
the symbol for the nickel ion, a TRANSITION ELEMENT, is always:	Ni2+
the symbol for the zinc ion, a TRANSITION ELEMENT, is always:	Zn2+. Note that this is the only common charge, so th charge is not included in the name 'zinc ion'.
the symbol for the silver ion, a TRANSITION ELEMENT, is always:	Ag+
the symbol for the mercury(I) ion is a special case:	it is a diatomic (two-atom) ion: Hg22+
Define an IONIC COMPOUND.	Ionic compound: A combination of cations and anions that form a crystalline solid. Must be electrically neutral.
How to Write the Formula of an Ionic Compound?	1. write cation formula + anion formula 2. do subscripts to make sum of charges equal to zero, using parens for polyatomic ions needed more than once
Chloric Acid	HClO3
Nitric Acid	HNO3
Sulfuric Acid	H2SO4
Carbonic Acid	H2CO3
Phosphoric Acid	H3PO4
Ammonium ion	NH4+
Hydroxide ion	OH-

Created by: boborii

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