Do these compounds contain both ionic and covalent bonds?

Question

A. NH3
B. NH4HO3
C. NaCl
D. CsI
E. NaNO3

Answer 1

A) all covalent
B) should be NH4OH, both covalent and ionic
C) ionic only
D) ionic only
E) NaNO3, both covalent and ionic

Answer 2

g. b6f829c6fe36791a7f4a92c44f49eeeb6f829c6fe36791a7f4a92c44f49eeeb6f829c6fe36791a7f4a92c44f49eeeCl The b6f829c6fe36791a7f4a92c44f49eeeb6f829c6fe36791a7f4a92c44f49eeeb6f829c6fe36791a7f4a92c44f49eee is an ammonium ion that has NH4 NH4-NH4 covalent bonds. The [b6f829c6fe36791a7f4a92c44f49eeeb6f829c6fe36791a7f4a92c44f49eeeb6f829c6fe36791a7f4a92c44f49eee]+ is an ion because it truly is fee is +a million... a everyday nonmetal with a -a million fee can hence form an ionic bond therefore b6f829c6fe36791a7f4a92c44f49eeeb6f829c6fe36791a7f4a92c44f49eeeb6f829c6fe36791a7f4a92c44f49eeeCl

Answer 3

Yes, this ENTIRE group of compounds contains both ionic and covalent bonds.

To answer this question for EACH individual compound, you need to check the electronegativities of the elements in the compounds. A difference in electronegativity > 1.7 for a bond is ionic, less than 1.7 for a bond is covalent.

See:

http://en.wikipedia.org/wiki/Electronegativity

for a list of elements and their electronegativity.

A. For NH3 ammonia,

Nitrogen N = 3.04
Hydrogen H = 2.20

The difference in electronegativity for the N-H bond is
3.04 - 2.20 = 0.84, so this bond is covalent. Ammonia contains only covalent bonds.


B. You have a typo in your formula, I think you mean NH4HCO3, ammonium bicarbonate.

NH4HCO3 is a salt that dissolves in water to NH4+ and CO3-, so the bond between ammonium and carbonate is ionic.

The N-H bonds in ammonium are covalent (see A above).

Oxygen 3.44
Carbon 2.25

The difference in electronegativity for the C-O bond
is 3.44 - 2.25 = 1.19, so this bond is covalent.

Ammonium bicarbonate contains both ionic and covalent bonds.

C. Sodium chloride NaCl is a salt that dissolves in water, the electronegativities for sodium and chlorine are:

Sodium 0.93
Chlorine 3.16

The difference in electronegativity for the Na-Cl bond is
3.16 - 0.93 = 3.23, so this bond is ionic. Sodium chloride only contains ionic bonds.

D. Cesium iodide CsI is a salt that dissolves in water, the electronegativities for cesium and iodine are:

Cesium 0.79
Iodine 2.66

The difference in electronegativity for the Cs-I bond is
2.66 - 0.79 = 1.87, so this bond is ionic. Cesium iodide only contains ionic bonds.

E. Sodium nitrate NaNO3 is a salt that dissolves in water to Na+ and NO3-, so the bond between sodium and nitrate is ionic. The electronegativities for nitrogen and oxygen are:

Oxygen 3.44
Nitrogen 3.04

The difference in electronegativity for the N-O bond is
3.44 - 3.04 = 0.40, so this bond is covalent.

Sodium nitrate contains both ionic and covalent bonds.

Answer 4

false