<span>The answer is they can be classified as part of the concussion group. Other instruments in the concussion group are clappers, cymbals and castanets. Concussion instruments are generally instruments that are made up of two similar objects. When they are clapped together or struck against each other, they produce sound.</span>
The number of protons in an atom determines its element on the periodic table. You can identify how many protons are in an element using it's atomic number.
