question_answer 37)

  The number of electrons in an element X is 15 and the number of neutrons is 16. Which of the following is the correct representation of the element? (a)                                  (b)                                  (c)                                  (d)

Answer:

  (a) Given that, number of electrons in element X = 15 and number of neutrons = 16 Atomic number = number of protons = number of electrons in neutral atom = 15 Mass number = number of protons + number of neutrons = 15 + 16 = 31 Thus the atom is represented as .