NH4+ is the chemical symbol for which compound?

NH4+ is the chemical symbol for which compound?

• A. Ammonium
• B. Neon
• C. Uranium
• D. DDT

Answer: (A)

NH4+ identifies the ammonium ion, a positively charged polyatomic ion. It forms when ammonia (NH3) accepts a proton (H+), giving NH4+. The four N–H bonds and the extra proton give the ion a formal charge of +1, which is why you see the plus sign. This ion appears in many salts, such as ammonium chloride (NH4Cl). The other options are not related: Neon (Ne) is a noble gas, Uranium (U) is a heavy metal, and DDT is a pesticide.

NH4+ identifies the ammonium ion, a positively charged polyatomic ion. It forms when ammonia (NH3) accepts a proton (H+), giving NH4+. The four N–H bonds and the extra proton give the ion a formal charge of +1, which is why you see the plus sign. This ion appears in many salts, such as ammonium chloride (NH4Cl). The other options are not related: Neon (Ne) is a noble gas, Uranium (U) is a heavy metal, and DDT is a pesticide.