Because you need to know what you are looking for before actually trying something so you can prevent any accidents by doing stuff at random
If an element is located on the
far right side of the periodic table one of its physical properties probably be
poor conductor of electricity. The answer is letter B.
Ions are stable atoms of elements formed when original atoms loose or gain electrons to form stable configuration. Anions are negatively charged ions formed when atoms gain electrons while cations are the positively charged ions formed when atoms loose electrons. In this case a charge of +1 means an atom lost one electron to form a stable configuration. Therefore, the correct answer is A