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Element without an enclosing tag is known as an empty element. The closing tags cannot be added to empty elements. No child nodes exist for empty elements. As a result, empty tags are self-closing or void in nature, and are not container tags. For input, meta-data, area, etc., empty elements can be used to embed images, lists, breaks, horizontal lines, hyperlinks, etc. For instance, <p> tag had a closing tag hence it was not an empty element.