1. identify the number of valence electrons.\n2. put a check mark in the box to identify which elements will…
1. identify the number of valence electrons.\n2. put a check mark in the box to identify which elements will gain electrons and which will lose electrons.\nacids and bases\nbohr model # of valence electrons will give away (lose) valence electrons will add (gain) extra electrons
Answer
Explanation:
Step1: Determine valence electrons for third element
For a neutral atom, the number of valence electrons can be determined from its position in the periodic table or from its electron - shell configuration. Let's assume the third element is sodium (Na). Sodium has an atomic number of 11. Its electron - shell configuration is 2, 8, 1. So the number of valence electrons is 1.
Step2: Determine electron - losing/gaining behavior for third element
Sodium is a metal. Metals tend to lose their valence electrons to achieve a stable electron configuration. So sodium will give away (lose) its 1 valence electron.
Step3: Determine valence electrons for fourth element
Let's assume the fourth element is chlorine (Cl). Chlorine has an atomic number of 17. Its electron - shell configuration is 2, 8, 7. So the number of valence electrons is 7.
Step4: Determine electron - losing/gaining behavior for fourth element
Chlorine is a non - metal. Non - metals tend to gain electrons to achieve a stable electron configuration. So chlorine will add (gain) 1 extra electron to complete its outer shell.
| Bohr Model | # of valence electrons | Will give away (lose) valence electrons | Will add (gain) extra electrons |
|---|---|---|---|
| H (shown) | 1 | √ | √ |
| O (shown) | 6 | √ | |
| Na (assumed third) | 1 | √ | |
| Cl (assumed fourth) | 7 | √ |
Answer:
| Bohr Model | # of valence electrons | Will give away (lose) valence electrons | Will add (gain) extra electrons |
|---|---|---|---|
| H | 1 | √ | √ |
| O | 6 | √ | |
| Na | 1 | √ | |
| Cl | 7 | √ |