Confidence votes 25. The groups in the periodic table tell you what each element within them will react with, the number of valance electrons the element has, and what family it is in. (Ex/ everything in group twelve will react with something that will let it lose two electrons.
Abdullah, Salman and Muqrin are all sons of the founder of modern Saudi Arabia, King Abdulaziz, usually referred to as Ibn Saud, who died in 1953. King Salman called on the royal family's Allegiance Council to recognise Muqrin as his heir.
In 1744, the first Saudi state was created near the region of Riyadh. The founder of modern Saudi Arabia, Abd al-Aziz, captured Riyadh at the turn of the 20th century, and began his efforts to unify the many factions on the Arabian Peninsula. It took many decades but he enjoyed a large measure of success.