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
create a dictionary of chemical elements and their symbols.
user
elements = {
    'hydrogen': 'h',
    'helium': 'he',
    'lithium': 'li', 
    'berylium': 'be',
    'boron': 'b',
    'carbon': 'c',
    'nitrogen': 'n',
    'oxygen': 'o',
    'fluorine': 'f',
    'neon': 'ne',
    'sodium': 'na',
    'magnesium': 'mg',
    'aluminum': 'al',
    'silicon': 'si', 
    'phosphorus': 'p',
    'sulfur': 's',
    'chlorine': 'cl',
    'argon': 'ar',
    'potassium': 'k',
    'calcium': 'ca'
}
assistant