Chemistry
An atom of an element has 9 protons, 9 electrons and 10 neutrons. State its
(a) atomic number
(b) mass number and
(c) electronic configuration.
Related Questions
James Chadwick discovered a sub-atomic particle. State its
(a) location in an atom
(b) charge and
(c) mass.
Sulphur has an atomic number 16 and mass number of 32. State the number of protons and neutrons in the nucleus of sulphur. Give a simple diagram to show the arrangement of electrons in an atom of sulphur.
Write down the electronic configuration of the following:
(a) 1224X
(b) 1531Y
Write down the number of electrons in X and neutrons in Y.