What is this # symbol represent?

The # symbol is called a hashtag and is used on social media platforms to categorize content and make it easier to search for specific topics or trends. It is commonly used to join conversations, increase visibility, and reach a wider audience.

The # symbol is called a hashtag. It is used on social media platforms to categorize posts and make them easier to find. When a hashtag is used, the post is added to a feed of other posts that use the same hashtag. This allows users to follow specific topics or themes by searching for the relevant hashtag. Hashtags are also used to promote events, products, or campaigns.

Cm is the chemical symbol for curium namad after the famous scientist madam curie. why wasn,t the symbol c cu or used instead?