Ionic Formulas: Transition Metals Quiz

What is the chemical formula for the ionic compound formed between sodium (Na) and chlorine (Cl)?

• NaCl

Answer explanation

The ionic compound formed between sodium (Na) and chlorine (Cl) is NaCl. Sodium has a +1 charge and chlorine has a -1 charge, resulting in a 1:1 ratio, which is represented by the formula NaCl.

Tags

NGSS.MS-PS1-1

Which of the following is the correct formula for the compound formed between magnesium (Mg) and oxygen (O)?

• MgO

Answer explanation

The correct formula for the compound formed between magnesium (Mg) and oxygen (O) is MgO. Magnesium has a +2 charge and oxygen has a -2 charge, resulting in a 1:1 ratio, hence the formula is simply MgO.

Tags

NGSS.MS-PS1-1

Identify the correct formula for the ionic compound formed between aluminum (Al) and sulfur (S).

• AlS

Answer explanation

The correct formula for the ionic compound formed between aluminum (Al) and sulfur (S) is Al₂S₃. Aluminum has a +3 charge and sulfur has a -2 charge, requiring two aluminum ions for every three sulfide ions to balance the charges.

Tags

NGSS.MS-PS1-1

What is the formula for the ionic compound formed between calcium (Ca) and fluorine (F)?

• CaF

Answer explanation

The ionic compound formed between calcium (Ca) and fluorine (F) is CaF₂. Calcium has a +2 charge and fluorine has a -1 charge, requiring two fluorine ions to balance the charge of one calcium ion.

Tags

NGSS.MS-PS1-1

Determine the correct formula for the compound formed between potassium (K) and iodine (I).

• KI

Answer explanation

The compound formed between potassium (K) and iodine (I) is potassium iodide, represented as KI. Potassium has a +1 charge and iodine has a -1 charge, resulting in a 1:1 ratio, making KI the correct formula.

Tags

NGSS.MS-PS1-1

• FeO

Answer explanation

The ionic compound formed between iron (III) and oxygen is Fe₂O₃. Iron (III) has a +3 charge, and oxygen has a -2 charge. To balance the charges, two iron ions (2 x +3 = +6) combine with three oxide ions (3 x -2 = -6), resulting in Fe₂O₃.

• CuS

Answer explanation

The formula for the ionic compound formed between copper (II) (Cu^{2+}) and sulfur (S) is CuS. Copper (II) has a +2 charge, while sulfur has a -2 charge, resulting in a 1:1 ratio in the compound.

Tags

NGSS.MS-PS1-1

• PbBr

Answer explanation

The compound formed between lead (II) (Pb^{2+}) and bromine (Br) requires two bromine ions to balance the +2 charge of lead. Therefore, the correct formula is PbBr_2.

An Ionic Compound is formed between:

• Metal and Metal

• Metal and Nonmetal

• Nonmetal and Nonmetal

• Metal and Metalloid

Answer explanation

An Ionic Compound is formed when a metal reacts with a nonmetal. Metals lose electrons to form positive ions, while nonmetals gain electrons to form negative ions, resulting in ionic bonds.

Tags

NGSS.MS-PS1-5

Which of these combinations is an ionic compound made of?

• metal and metal

• nonmetal and nonmetal

• metal and nonmetal

• cation and Cation

Answer explanation

Ionic compounds are formed when metals react with nonmetals. Metals lose electrons to become cations, while nonmetals gain electrons to become anions, resulting in the formation of ionic bonds. Thus, the correct combination is metal and nonmetal.