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.
King Abdullah was the 13th of the 45 sons of King Abdulaziz. He is believed to have been born in August 1924 in Riyadh, although there is some dispute about his actual birth date. When he came to the throne in 2005 he succeeded another half-brother, Fahd.