Subject: Chemistry
Book: General Chemistry
The periodic table is structured in periods (horizontal rows) and groups (vertical columns). Periods indicate the principal energy level for the element’s valence electrons. Groups, often labeled 1–18 or by names (e.g., Group 1: Alkali Metals), contain elements with similar valence electron configurations and thus similar chemical properties. For example, Group 17 (the halogens) are highly reactive nonmetals. Understanding periods and groups is vital for predicting reactivity, trends in atomic size, and more.
What is the chemical formula for sodium carbonate?
View QuestionWhat is the pH value of pure water?
View QuestionWhich element is commonly used as a catalyst in hydrogenation reactions?
View QuestionWhich element is represented by the symbol 'Cu'?
View QuestionWhat is the chemical formula for sodium hydroxide?
View QuestionWhat is the process by which plants convert sunlight into chemical energy?
View QuestionWhat is the chemical formula for silicon dioxide?
View QuestionWhich element is represented by the symbol 'B'?
View QuestionWhat is the chemical formula for phosphoric acid?
View QuestionWhich element is primarily used in stainless steel?
View Question