Question

Что обозначает 2Н??????????????????????

Answer 1

2Н означает, что у водорода 2 атома

Answer 2

2Н is not a commonly used abbreviation or symbol that has a widely recognized meaning. Without additional context or information, it is difficult to determine what 2Н specifically refers to. It could be an abbreviation or symbol used in a specific field or industry that is not widely known or used outside of that context.

If you can provide more information or context about where you encountered the term 2Н, I may be able to provide a more specific answer.