1 To enable the integrated logon, go to Settings System Settings. 2  Click the Logon tab in the ThinkVantage Fingerprint Software Settings window. 3  Select the option and make sure the following are checked: 4  Allow to bypass logon using Windows password. 5  Allow user selfenroll in logon.
Thallium: properties of free atoms. Thallium atoms have 81 electrons and the shell structure is 2.8.18.32.18.3. The ground state electron configuration of ground state gaseous neutral thallium is [ Xe ]. 4f 14. 5d 10. 6s 2. 6p 1 and the term symbol is 2 P 1/2.hallium atoms have 81 electrons and the shell structure is 2.8.18.32.18.3.
Problem #1: The edge length of the unit cell of Ta, is 330.6 pm; the unit cell is body-centered cubic. Tantalum has a density of 16.69 g/cm 3 (a) calculate the mass of a tantalum atom. (b) Calculate the atomic weight of tantalum in g/mol. Problem #2: Chromium crystallizes in a body-centered cubic structure.The unit cell volume is 2.583 x 10Â¯ 23 cm 3. Determine the atomic radius of Cr in pm. Problem #3: Barium has a radius of 224 pm and crystallizes in a body-centered cubic structure.) Calcuate the mass inside the unit cell: 6.95 x 10 -23 cm 3 times 4.253 g/cm 3 = 2.95 x 10 -22 g. Use a ratio and proportion to calculate the atomic mass: 2.95 x 10 -22 g is to two atoms as 'x' is to 6.022 x 10 23 mol -1. x = 88.95 g/mol (or 88.95 amu). Problem #7: Mo crystallizes in a body-centered cubic arrangement.