EVERYDAY SCIENCE

SCIENCE

CHEMISTRY

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
How many electrons can fit in the first energy level?
A
2
B
8
C
4
D
16
Explanation: 

Detailed explanation-1: -Answer and Explanation: The maximum number of electrons in the first energy level is 2. The maximum number of electrons in the second energy level is 8.

Detailed explanation-2: -Orbital: A region of space within an atom where an electron in a given subshell can be found. Any orbital can hold a maximum of 2 electrons with opposite spin. The first shell has one 1s orbital and holds 2 electrons. The second shell holds 8 electrons; 2 in a 2s orbital and 6 in three 2p orbitals.

Detailed explanation-3: -The maximum number of electrons in the n=2 energy level is eight. This is because the s sublevel only has one orbital while the p sublevel only has three orbitals. Each orbital contains a maximum of two electrons, each with an opposite spin to the other.

Detailed explanation-4: -There are 2 electrons on the first energy level, 8 electrons on the second level, 8 electrons on the third energy level, and 1 on the fourth energy level.

Detailed explanation-5: -Each type of orbital can accommodate a different number of electrons. According to the electron cloud model, the first energy level (numbered 1) only has one s orbital. Therefore, it can only hold a maximum of two electrons. S orbitals are approximately spherical.

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