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.
The house of bin Saud continued to maintain its politico-religious alliance with the Wahhabi sect through the waxing and waning of its own political fortunes over the next 150 years, through to its eventual proclamation of the Kingdom of Saudi Arabia in 1932, and then afterwards, on into modern times.