Nomenclature Quiz

Ionic and Covalent Compounds: Naming and Formulas + poly-atomic ions and atomic radius

Hydroxide formula

OH -1

nitrate formula

NO3 -1

Sulfate

SO4 -2

carbonate

CO3 charge -2

phosphate

PO4 -3

ammonium

NH4 +1

When does atomic radius increase and decrease?

Increases as you go down periodic table (electron shells increase), Decreases as you go across

Which elements need a roman numeral?

lead Pb, copper Cu, iron Fe, cobalt Co,

do covalent compounds use roman numerals?

no, only ionic because you need to know the charge for ionic but not covalent

Which uses prefixes, covalent or ionic?

covalent

do covalent compounds have a metal in them?

no, only ionic has a nonmetal. Covalent are 2 nonmetals

how to write a formula for ionic compounds?

use criss cross method to cancel out charges

how to name ionic compounds?

keep first element, drop ending of second and add -ide. no prefixes

how to write a formula for covalent compounds?

write down the abbreviated element and use the prefix for the subscript

how to name covalent compounds

use prefixes if needed on 1st, always on second

group 1=

alkali metals

group 2

alkaline earth metals

group 17

Halogens

group 18

noble gases

how to find charges on the periodic table

from left to right: 1+, 2+, 3+ 0, -3, -2, -2, 0