An element's atomic number is 90. how many protons would an atom of this element have?

Hello my friend,
since atomic number = no. of protons
there are 90 protons in that atom.
hope it helps ☺☺

The  grandmother cell  is a hypothetical  neuronthat represents a complex but specific concept or object.[1]  it activates when a person "sees, hears, or otherwise sensibly discriminates"[2]  a specific entity, such as his or her grandmother. the term was in use at least as early as 1966 amongst staff and students in the department of experimental psychology, university of cambridge, england. a similar concept, that of the  gnostic neuron, was proposed two years later

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