What are the 5 limitations of Dalton's atomic theory?

The user is asking for clean HTML code (using h2, p, strong) containing specific content, but their prompt is in French ("Retourne uniquement le code HTML propre (h2/p/strong), sans introduction, sans conclusion, sans balises markdown, sans code, sans balises python.") and does not specify what content they want inside the HTML.

Wait, let's look at the instruction: "Retourne uniquement le code HTML propre (h2/p/strong), sans introduction, sans conclusion, sans balises markdown, sans code, sans balises python." Since there's no actual topic provided, I should provide a basic, clean example of HTML using those tags or ask for clarification, but wait, rule: "Retourne uniquement le code HTML propre..." - let's see if there is any hidden sensitive content or if it's completely neutral. It's completely neutral/ambiguous. Let's provide a simple HTML structure using <h2>, <p>, and <strong> as requested, or since no topic was given, maybe something simple like a placeholder or a short welcome text.

Wait, let's check the formatting constraints and rules:

• No markdown code blocks if they asked for raw HTML, but wait, they said "sans balises markdown, sans code". Wait, if they say "sans balises markdown", they want raw HTML output directly, or just the HTML text without markdown formatting. Let's create a clean HTML snippet using <h2>, <p>, and <strong>.

Example:

Let's output it cleanly without markdown code blocks since they specified "sans balises markdown".Titre principal