Binary Ionic Compounds: Naming and Writing formulas

What is the formula for calcium chloride?

• CaCl2

• CaCl

• Ca2Cl

• CaCl3

What is the role of valence electrons in the formation of ionic bonds?

• Valence electrons are the outermost electrons that are involved in chemical bonding; in ionic bonds, they are shared between atoms.

• Valence electrons are the innermost electrons that do not participate in bonding.

• Valence electrons are the outermost electrons of an atom that are involved in chemical bonding; in ionic bonds, electrons are transferred from the metal to the non-metal.

• Valence electrons are electrons that are lost during the formation of covalent bonds.

Tags

NGSS.HS-PS1-2

What is the formula for potassium oxide?

• K2O

• K2O3

• K2O2

• KO

How do you determine the charge of an anion in a binary ionic compound?

• The charge of an anion is determined by its group number in the periodic table.

• The charge of an anion is always -2 regardless of its group.

• The charge of an anion is determined by the number of protons in the nucleus.

• The charge of an anion is always positive.

How do you determine the charge of a cation in a binary ionic compound?

• The charge of a cation is determined by its group number in the periodic table; for example, group 1 elements have a +1 charge, group 2 elements have a +2 charge.

• The charge of a cation is always +1 regardless of its group number.

• The charge of a cation is determined by the number of electrons it has lost.

• The charge of a cation is determined by its atomic mass.

Tags

NGSS.HS-PS1-1

How do you write the formula for a binary ionic compound?

• Determine the charges of the cation and anion, use the crisscross method to find the subscripts, and simplify if necessary.

• Write the names of the elements and combine them without considering their charges.

• Use the periodic table to find the atomic masses and add them together.

• Multiply the charges of the cation and anion to get the final formula.

Tags

NGSS.HS-PS1-1

What is the formula for sodium bromide?

• NaBr

• Na2Br

• NaBr2

• NaB

Tags

NGSS.MS-PS1-1

What is the formula for sodium oxide?

• NaO

• Na2O

• Na3O

• Na2O2

Tags

NGSS.HS-PS1-2

How do you name a binary ionic compound?

• Write the name of the non-metal (anion) first, followed by the name of the metal (cation) with its ending changed to '-ide'.

• Write the name of the metal (cation) first, followed by the name of the non-metal (anion) with its ending changed to '-ate'.

• Write the name of the metal (cation) first, followed by the name of the non-metal (anion) with its ending changed to '-ite'.

• Write the name of the metal (cation) first, followed by the name of the non-metal (anion) with its ending unchanged.

What is the formula for a compound formed between strontium and selenium?

• SrSe

• SrS

• SrO

• SrCl