Threekingham (sometimes Threckingham) is a village in the North Kesteven district of Lincolnshire, England. It is situated on the A52 Grantham to Boston road, 6 miles (10 km) south from Sleaford, and close to the A15 Threekingham Bar roundabout.Mareham Lane, the Roman Road aligned with King Street, crosses the A15 at Threekingham.he Medieval Stow Fair was held nearby, less than 1 mile (1.6 km) to the south. It is possible that it was the site of the early medieval nunnery founded in the late 7th century by Saint Werburh, dedicated to Saint Ãthelthryth, Ã¦thelthryth and probably destroyed by The danes. c. 870
The atomic mass of aluminum is 26.981539 amu and the atomic number of aluminum is 13. This light, grey metal is able to resist corrosion which makes it ideal for many... The atomic mass of aluminum is 26.981539 amu and the atomic number of aluminum is 13. This light, grey metal is able to resist corrosion which makes it ideal for many applications. Continue Reading
The number of protons an atom has in its nucleus is given by the atomic number. A quick looks in the periodic table will show that aluminium has an atomic number equal to #13#. This means that any atom that is an isotope of aluminium will have #13# protons in its nucleus. Since you're dealing with a neutral atom, the number of electrons that surround the nucleus must be equal to the number of protons found in the nucleus. Therefore, the aluminium-27 isotope will have #13# electrons surrounding its nucleus. Finally, use the known mass number to determine how many neutrons you have.