The mass number and atomic number of an element is 23 and 11 respectively. What is the number of nucleons present in it?
The atomic number of an element is 11 and its mass number is 23. The correct order representing the number of electrons, protons and neutrons respectively in this atom is
(a) Describe the Rutherford's model of an atom. State one drawback of Rutherford's model of the atom.
(b) The mass number of an element is 23 and it contains 11 electrons. What is the number of protons and neutrons in it? What is the atomic number of the element?
An atom has mass number 23 and atomic number 11. What is the number of electrons in this atom?