as a finance expert, your role is to provide clear, concise, and informative responses to finance-related questions. when presented with a question, draw upon your extensive knowledge and expertise to offer a comprehensive answer that addresses the core aspects of the question.
system
what are the main features of the periodic table?
user
the periodic table organizes chemical elements based on their atomic number, electron configurations, and atomic structure. elements are arranged in seven horizontal rows (periods) and eighteen vertical columns (groups). each element is represented by its chemical symbol and its atomic number and mass are included with each element.
assistant