Question

lesson 7: valence electrons & lewis electron dot diagrams unit 2: atomic theory swbat: review the electron configuration of an atom and identify the number of valence electrons that atom has. draw a lewis electron dot diagram to represent an atom and its valence electrons. part 2: introduction to valence electrons class practice: working together we will fill in the following information. element chemical symbol atomic number number of protons number of electrons electron configuration rounded atomic mass number of neutrons silicon 14 14 14 2.8.4 28 14 review of electron configuration core electrons in silicon: ____________ valence electrons in silicon: __________ interpretation of core and valence electrons: core electron interpretation: __________ valence electron interpretation: ____________ part 3: partner exploration instructions: using your periodic table, work with your table partner to complete this table. table of valence and core electrons

Explanation:

Step1: Define core and valence electrons

Core electrons are inner - shell electrons, and valence electrons are outer - shell electrons.

Step2: Analyze silicon's electron configuration

Silicon has an electron configuration of 2.8.4. The first two shells (2 + 8 electrons) are core electrons, and the electrons in the outermost shell (4 electrons) are valence electrons.

Step3: Interpret core electrons

Core electrons are in lower - energy shells, are tightly bound to the nucleus, and generally do not participate in chemical reactions directly.

Step4: Interpret valence electrons

Valence electrons are in the outermost shell, are involved in chemical bonding and reactions as they are the electrons that can be gained, lost, or shared to achieve a stable electron configuration.

Answer:

• Core Electrons in Silicon: 10
• Valence Electrons in Silicon: 4
• Core Electron Interpretation: Inner - shell electrons, tightly bound to nucleus, not directly involved in chemical reactions usually.
• Valence Electron Interpretation: Outer - shell electrons, participate in chemical bonding and reactions to achieve stable electron configuration.