Question

bohr model quiz
draw the bohr model for the following elements.

1. na
2. cl⁻¹
3. c

Explanation:

Step1: Find Na's atomic number

Sodium (Na) has atomic number $Z=11$, so protons $=11$, electrons $=11$. Electron shell capacity: $2, 8, 1$.

Step2: Find Cl⁻'s electron count

Chlorine (Cl) has $Z=17$, neutral electrons $=17$. $Cl^-$ gains 1 electron, so electrons $=18$. Shells: $2, 8, 8$.

Step3: Find C's atomic number

Carbon (C) has $Z=6$, protons $=6$, electrons $=6$. Shells: $2, 4$.

Step4: Define Bohr Model structure

Each model has a nucleus labeled with protons ($p$) and neutrons ($n$, approximate mass number - protons: Na mass=23, $n=12$; Cl mass=35, $n=18$; C mass=12, $n=6$), plus electron shells with correct electron counts.

Answer:

1. Sodium (Na) Bohr Model:

• Nucleus: Label with $p=11$, $n=12$
• 1st inner shell: 2 electrons
• 2nd shell: 8 electrons
• 3rd outer shell: 1 electron

1. Chloride Ion (Cl⁻) Bohr Model:

• Nucleus: Label with $p=17$, $n=18$
• 1st inner shell: 2 electrons
• 2nd shell: 8 electrons
• 3rd outer shell: 8 electrons

1. Carbon (C) Bohr Model:

• Nucleus: Label with $p=6$, $n=6$
• 1st inner shell: 2 electrons
• 2nd outer shell: 4 electrons

(Visual structure: Concentric circles around the nucleus, with dots representing electrons on each circle matching the counts above)