Question

1. what type of bond forms between two nonmetals?

a. ionic
b. metallic
c. covalent
d. nuclear

1. which pair would form an ionic bond?

a. c and o
b. n and h
c. k and cl
d. s and o

1. what is the correct name for fecl₂?

a. iron chloride
b. iron(i) chloride
c. iron(ii) chloride
d. iron(iii) chloride

1. using the criss - cross method, what is the formula for calcium phosphate?

a. capo₄
b. ca₂po₄
c. ca₃(po₄)₂
d. ca₂(po₄)₃

1. name cu₂o.

a. copper(ii) oxide
b. copper(i) oxide
c. dicopper monoxide
d. copper oxide

1. what is the formula for ammonium sulfate?

a. nh₄so₄
b. (nh₄)₂so₄
c. nh₄so₃
d. (nh₄)(so₄)₂

1. which correctly represents tin(iv) carbonate?

a. sn(co₃)₂
b. sn₂co₃
c. sn(co₃)₄
d. sn₄(co₃)

1. name n₂o₄.

a. dinitrogen tetroxide
b. nitrogen oxide
c. nitrogen(iv) oxide
d. tetranitrogen dioxide

1. what is the formula for carbon monoxide?

a. c₂o
b. co₂
c. co
d. c₃o₂

Explanation:

Question 18

Ionic bonds form between metals and nonmetals, metallic bonds between metals, nuclear bonds are in atomic nuclei. Covalent bonds form between nonmetals as they share electrons.

Ionic bonds form between a metal and a nonmetal. K (potassium, metal) and Cl (chlorine, nonmetal) will transfer electrons. C, N, H, S, O are nonmetals (or nonmetal - like), so their bonds are covalent.

FeCl₃ has Fe with a +3 charge (since Cl is -1, 3 Cl⁻ need Fe³⁺). So we use Roman numerals for the charge: Iron(III) chloride. Iron chloride is ambiguous, Iron(I) would be Fe⁺, Iron(II) Fe²⁺.

Answer:

C. Covalent

Question 19