GENERAL KNOWLEDGE

Detailed explanation-1: -Answer and Explanation: There are 8 electrons in the second energy level of an atom. Electrons orbit the nucleus (protons and neutrons) in levels depending on their degree of activity.

Detailed explanation-2: -After the first energy level contains 2 electrons (helium), the next electrons go into the second energy level. After the second energy level has 8 electrons (neon), the next electrons go into the third energy level.

Detailed explanation-3: -The second shell can hold 8 electrons. The third shell can hold 32 electrons. Within the shells, electrons are further grouped into subshells of four different types, identified as s, p, d, and f in order of increasing energy.

Detailed explanation-4: -The second shell has two subshells (labeled 2s and 2p). The 2s subshell holds a maximum of 2 electrons, and the 2p subshell holds a maximum of 6 electrons. This means that the second shell can hold a maximum of eight electrons (2+6=8).

Detailed explanation-5: -Therefore, the second level can contain a maximum of eight electrons-that is, two in the s orbital and 6 in the three p orbitals. Each principal energy level above the second contains, in addition to one s orbital and three p orbitals, a set of five d orbitals, called the d sublevel.