Final answer:
The element with the electron configuration 1s2, 2s2, 2p6, 3s2, 3p6, 4s2, 3d10, 4p6, 4d5, 5s2 is Technetium, a transition metal.
Step-by-step explanation:
The element with the electron configuration of 1s2, 2s2, 2p6, 3s2, 3p6, 4s2, 3d10, 4p6, 4d5, 5s2 belongs to the transition metals group of the periodic table. This specific configuration represents the element Technetium (Tc), which has an atomic number of 43. The given configuration shows that it has filled 1s, 2s, 2p, 3s, 3p, 4s, 3d, 4p subshells, and has 5 electrons in the 4d subshell with 2 electrons in the 5s subshell.
The electron configuration pattern for a particular group in the periodic table is often similar among its members. As an example, the electron configuration of 2nd-row elements demonstrates this pattern, starting from lithium (1s²2s¹) and ending with neon (1s²2s²2p¶). These configurations illustrate how electrons fill the available orbitals based on the energy level, which increases in the order of 1s, 2s, 2p, 3s, etc., according to the Aufbau principle.