Which of the following combination represents an element with a net charge of +1 with a mass number of 75?
What is mass number of an atom which contains 28 protons,28 electrons,and 34 neutrons?
Which of the following statements is/ are correct about neutral elements?
(i) Atomic number = number of protons = number of electrons (ii) Mass number = number of protons + number of neutrons (iii) Atomic number = number of protons + number of electrons (iv) Mass number = number of neutrons = number of electrons