a) Define atomic mass unitb) Give one example of a polyatomic cation and polyatomic anion respectively.
Question
a) Define atomic mass unitb) Give one example of a polyatomic cation and polyatomic anion respectively.
Solution
a) Atomic mass unit (amu) is a unit of measurement used to express the mass of atoms and molecules. It is defined as one-twelfth the mass of a carbon-12 atom.
b) One example of a polyatomic cation is the ammonium ion (NH4+), which consists of one nitrogen atom and four hydrogen atoms. One example of a polyatomic anion is the sulfate ion (SO42-), which consists of one sulfur atom and four oxygen atoms.
Similar Questions
Define the following terms: (3)(a) Molecular mass (b) Atomic mass unit (c) Polyatomic ions
a. Define the term atomic mass unit.
Two atoms are isotopes if they havea) different atomic numbers.b) the same mass number, but different atomic numbers.c) the same number of protons and neutrons.d) the same number of electrons, but a different number of neutrons.e) the same atomic number, but a different mass number.
Which of the following best describes the difference between a cation and an anion?Choose 1 answer:Choose 1 answer:(Choice A) Cations are positively charged and anions are negatively charged.ACations are positively charged and anions are negatively charged.(Choice B) Anions are positively charged and cations are negatively charged.BAnions are positively charged and cations are negatively charged.(Choice C) Cations are metallic and anions are gaseous.CCations are metallic and anions are gaseous.(Choice D) Cations are gaseous and anions are metallic.DCations are gaseous and anions are metallic
Which of the following statements is NOT true?A The particles which are present in an atom are known as sub-atomic particles. B The particles which are present in a nucleus are known as nucleons. C An alpha particle is a doubly ionised helium nucleus. D The mass of an electron is 1.06 × 109 g.
Upgrade your grade with Knowee
Get personalized homework help. Review tough concepts in more detail, or go deeper into your topic by exploring other relevant questions.