QUESTION IMAGE
Question
fill in the missing information:
| symbol | atom or ion? (check all that apply) | number of protons | number of electrons |
|---|---|---|---|
| ru | ☐ neutral atom ☐ cation ☐ anion | ☐ | ☐ |
| ☐ | ☐ neutral atom ☐ cation ☐ anion | 9 | 10 |
For $\boldsymbol{\ce{Mg^{2+}}}$:
Step1: Determine atom/ion type
$\ce{Mg^{2+}}$ has a positive charge, so it's a cation (not neutral atom or anion).
Step2: Find number of protons
Atomic number of Mg is 12, so protons = 12.
Step3: Find number of electrons
For a cation with +2 charge, electrons = protons - charge = $12 - 2 = 10$.
For $\boldsymbol{\ce{Ru}}$:
Step1: Determine atom/ion type
$\ce{Ru}$ has no charge, so it's a neutral atom (not cation or anion).
Step2: Find number of protons
Atomic number of Ru is 44, so protons = 44.
Step3: Find number of electrons
In neutral atom, electrons = protons = 44.
For the last row:
Step1: Determine atom/ion type
Protons = 9 (atomic number 9 is F), electrons = 10. Since electrons > protons, it's an anion (charge = electrons - protons = $10 - 9 = -1$), so symbol is $\ce{F^-}$. Not neutral atom or cation.
Filled Table:
| symbol | atom or ion? (check all that apply) | number of protons | number of electrons |
|---|---|---|---|
| $\ce{Ru}$ | $\boldsymbol{\square}$ neutral atom, $\square$ cation, $\square$ anion | 44 | 44 |
| $\ce{F^-}$ | $\square$ neutral atom, $\square$ cation, $\boldsymbol{\square}$ anion | 9 | 10 |
(For the checkboxes, the bolded ones are the selected ones. For the number fields, the filled numbers are as calculated above.)
Snap & solve any problem in the app
Get step-by-step solutions on Sovi AI
Photo-based solutions with guided steps
Explore more problems and detailed explanations
Step1: Determine atom/ion type
Protons = 9 (atomic number 9 is F), electrons = 10. Since electrons > protons, it's an anion (charge = electrons - protons = $10 - 9 = -1$), so symbol is $\ce{F^-}$. Not neutral atom or cation.
Filled Table:
| symbol | atom or ion? (check all that apply) | number of protons | number of electrons |
|---|---|---|---|
| $\ce{Ru}$ | $\boldsymbol{\square}$ neutral atom, $\square$ cation, $\square$ anion | 44 | 44 |
| $\ce{F^-}$ | $\square$ neutral atom, $\square$ cation, $\boldsymbol{\square}$ anion | 9 | 10 |
(For the checkboxes, the bolded ones are the selected ones. For the number fields, the filled numbers are as calculated above.)