Question

Which keyword in XML describes that the element has no content?

Answer 1

An element with no content is said to be empty. The representation of an empty element is either a start-tag immediately followed by an end-tag or an empty-element tag.
In XML, you can indicate an element like this:
<element></element>
You can also use a self-closing tag as:
<element />
Hopefully this answer helps.
Thanks.

Answer 2

There are two ways you can represent empty XML tags or XML elements with no content.

One way to do this is to use the open or start element tag immediately followed by the close or end element tag. This is represented as follows:

<element></element>

The other option is to make use of the self-closing tag. This is given as follows:

<element />

Both forms produce the same result when executed using an XML parser.

Empty tags represent empty values and not null values.