Yes, but only in the sense that since there are more than six, there have to be (at least) six. If you meant "are there EXACTLY six", then no.
Around about 16% of the elements are non-metals.
this is the line that seperates metals and non-metals. those on the left are metals and those on the right are non-metals.
metal and non metal elements
metals
Non-metals.
The elements to the right
Metals are elements that are usually malleable, ductile, conductive of heat and electricty, and lusterous. Non metals are elements that do not exhibit these characteristics. Metaloids are elements with intermediate properties.
Elements are classified as metals, metalloids and nonmetals.
non metalsnon metals
All you have to do is look on your periodic table of elements. Metals are to the left and non-metals are to the right. This way we know group four are metals.
Metals, non-metals and transition metals.
metals, non metals, metaloids