Matterhorn

Considering mountains with a topographic prominence of at least 300 m (980 ft), the Matterhorn is the sixth-highest summit in the Alps and Europe outside the Caucasus Mountains. It is the fifth-highest summit of Valais and Switzerland and the third highest summit of the Aosta Valley and Italy. Locally, it is the third-highest summit in the municipality of Zermatt and the highest summit in the municipality of Valtournenche. On the official International Climbing and Mountaineering Federation list of Alpine four-thousanders, which also includes subsidiary summits of higher mountains such as the nearby Monte Rosa, the Matterhorn is the 12th highest summit in the Alps.

Question: is the matterhorn the tallest mountain in switzerland
Answer: no