Question

question 5. complete the following table concerning the three isotopes of silicon, si.
isotope|number of protons|number of electrons|number of neutrons
silicon - 28|
silicon - 29|
silicon - 30|

Explanation:

Step1: Recall atomic number of silicon

Silicon (Si) has an atomic number of 14. The number of protons is equal to the atomic number for a neutral atom. So for all silicon isotopes, the number of protons is 14.

Step2: Determine number of electrons

In a neutral atom, the number of electrons is equal to the number of protons. So for all silicon - isotopes, the number of electrons is 14.

Step3: Calculate number of neutrons for each isotope

The mass number of an isotope is the sum of protons and neutrons. For Silicon - 28: Neutrons = Mass number - Protons = 28 - 14 = 14. For Silicon - 29: Neutrons = 29 - 14 = 15. For Silicon - 30: Neutrons = 30 - 14 = 16.

Answer:

Isotope	Number of Protons	Number of Electrons	Number of Neutrons
Silicon - 29	14	14	15
Silicon - 30	14	14	16