Correct the error in each of the following statements: (a) The formula of ammonia is NH3 (b) Molecules of potassium chloride have the formula KCl. (c) Cl-is a cation. (d) CH4 is a polyatomic ion

검증된 단계별 안내

(a) The formula of ammonia is correct as NH_3. However, if the statement implies an error, it might be due to a typographical mistake or context misunderstanding. Ensure the context is clear that NH_3 is indeed ammonia.

(b) Potassium chloride (KCl) is an ionic compound, not a molecule. Molecules are typically covalently bonded, whereas KCl consists of ions.

(d) CH_4 is methane, a neutral molecule, not a polyatomic ion. Polyatomic ions are charged species composed of two or more atoms covalently bonded.

비슷한 문제에 대한 검증된 영상 답변:

이 영상 해법은 위 문제에 도움이 된다고 튜터들이 추천한 것입니다.

영상 길이:

주요 개념

질문에 올바르게 답하기 위해 반드시 이해해야 하는 핵심 개념들은 다음과 같습니다.

Chemical Formulas

Chemical formulas represent the composition of a substance, indicating the types and numbers of atoms present. For example, NH3 denotes ammonia, which consists of one nitrogen atom and three hydrogen atoms. Understanding how to interpret these formulas is essential for identifying compounds and their properties.

Ionic Compounds

Ionic compounds, such as potassium chloride (KCl), consist of positively charged cations and negatively charged anions. In KCl, potassium (K) is a cation, while chloride (Cl) is an anion. Recognizing the roles of these ions is crucial for understanding the structure and behavior of ionic compounds.

Cations and Anions

Cations are positively charged ions formed when an atom loses electrons, while anions are negatively charged ions formed when an atom gains electrons. For instance, Cl- is an anion, not a cation, as it has gained an electron. This distinction is fundamental in chemistry for predicting the behavior of elements in reactions.