1. a Define the terms: proton, neutron and electron.
2. b An atom X has a proton number of 19 and relative atomic mass of 39.
- How many electrons, protons and neutrons are there in an atom of X?
- How many electrons will there be in the outer energy level (shell) of an atom of X?
- What is the electronic configuration of X?
b. b An atom X has a proton number of 19 and relative atomic mass of 39.
- How many electrons, protons and neutrons are there in an atom of X?
- How many electrons will there be in the outer energy level (shell) of an atom of X?
- What is the electronic configuration of X?