Midterm Review: Ionic Compounds

What type of ion is formed when an atom loses an electron?

• positive ion

• negative ion

• anion

• cation

Which electrons are responsible for transition metals having multiple oxidation states?

• f block

• s block

• p block

• d block

An arrangement of valence electrons found in helium, argon, neon, and similar elements is known as a?

• dot structure

• octet

• group 18

• noble gas configuration

Tags

NGSS.HS-PS1-1

A compound has the formula X3Y. For every 15 X atoms present in this compound, how many Y atoms are there?

• 3

• 45

• 5

• 15

Tags

NGSS.MS-PS1-1

The formula for iron(III) oxide, Fe2O3, indicates that one unit of the compound contains __ iron atoms.

• 1

• 3

• 5

• 2

Tags

NGSS.MS-PS1-1

What is the formula of calcium bromide?

• CaBr

• Ca₂Br₂

• CaBr₂

• Ca₂Br

Tags

NGSS.MS-PS1-1

Most elements that can have more than one possible oxidation number are located in the __ of the periodic table.

• d block

• p block

• s block

• f block

The name of the anion PO43- is __.

• phosphite

• phosphide

• phosphorus oxide

• phosphate

The charge on the polyatomic nitrite ion, NO2-, is 1-. What is the formula for beryllium nitrite?

• Be(NO₂)₂

• Be(NO₃)₂

• B(NO₂)₂

• B(NO₃)₂

Tags

NGSS.HS-PS1-2

Which of these is true about the oxidation numbers of transition metals, such as chromium?

• oxidation number is always equal to +1

• can have multiple positive oxidation numbers

• oxidation number is always equal to +2

• can have multiple negative oxidation numbers