Silicon

Question

1. Write the complete electron configuration.
2. What is the valence shell? 3. How many valence electrons are there? 4. How many electrons between the nucleus and valence shell are there?
5. What is the charge on the entire atom? 6. What is the noble gas configuration for this atom?

Answer 1

1. Complete Electron Configuration: The complete electron configuration for silicon (Si), which has an atomic number of 14, is: \[ 1s^2 , 2s^2 , 2p^6 , 3s^2 , 3p^2 \]

2. Valence Shell: The valence shell for silicon is the third shell (n=3), which includes the 3s and 3p subshells.

3. Valence Electrons: Silicon has 4 valence electrons (2 from the 3s subshell and 2 from the 3p subshell).

4. Electrons Between the Nucleus and Valence Shell: There are 10 electrons between the nucleus and the valence shell (2 electrons in the 1s subshell, 2 in the 2s subshell, and 6 in the 2p subshell).

5. Charge on the Entire Atom: The charge on a neutral silicon atom is 0. A neutral atom has an equal number of protons and electrons, and for silicon, there are 14 protons and 14 electrons.

6. Noble Gas Configuration: The noble gas configuration for silicon can be represented using neon (Ne) as the nearest noble gas preceding silicon: \[ [Ne] , 3s^2 , 3p^2 \]