The number of in the nucleus determines an element's atomic number. this number defines the name of the element, no other element shares that atomic number.

The number of protons in the nucleus determines an element's atomic number.

answer: e.   sour taste

explanation: acids are those substances which dissociates in water to give ions. as they dissociate to give ions, they act as electrolytes and thus are electrically conductive. acids are sour in taste. example: hcl

bases are those substances which dissociates in water to give ions or accepts ions. as they dissociate to give ions, they act as electrolytes and thus are electrically conductive. bases are bitter in taste. bases are slippery in nature.

i think the answer is terrae but not 100 percent sure. ▓▬▬ §