Respuesta :
The correct pattern that represents the ions in each group as you go across the periodic table is:
O -1, -2, -3, +4, -3, -2, -1, 0
Here's a step-by-step explanation:
1. The periodic table is arranged in periods (rows) and groups (columns).
2. As you move across a period from left to right, the number of protons and electrons in the elements increases by one.
3. The number of valence electrons (outermost electrons involved in bonding) also increases by one as you move across a period.
4. The elements on the left side of the periodic table tend to lose electrons to form positive ions (cations) with a charge equal to the number of electrons lost.
5. The elements on the right side of the periodic table tend to gain electrons to form negative ions (anions) with a charge equal to the number of electrons gained.
6. The charge of an ion is represented by a superscript after the element symbol. For example, O-2 represents an oxygen ion with a charge of -2.
In the given pattern, the ions in each group as you go across the table are:
Group 1: +1
Group 2: +2
Group 3: +3
Group 4: +4 (exception: carbon does not commonly form a +4 ion)
Group 5: -3
Group 6: -2
Group 7: -1
Group 8 (Noble gases): 0 (do not typically form ions)
So, the correct pattern is:
O -1, -2, -3, +4, -3, -2, -1, 0
This pattern represents the charges of the ions in each group as you go across the periodic table.
Answer:
-1, -2, -3, +/4, +3, +2, +1, 0
Step-by-step explanation:
The correct pattern of ions as we go across the periodic table is :
-1, -2, -3, +/4, +3, +2, +1, 0
Here's a breakdown of the pattern:
- Groups 1 and 2 (left side): These elements tend to lose electrons to form positive ions (cations). The charge of the cations increases from +1 in Group 1 to +2 in Group 2.
- Groups 13-17 (right side):These elements tend to gain electrons to form negative ions (anions). The charge of the anions increases from -1 in Group 17 to -3 in Group 15, except for Group 16, which can form -2 or -4 ions.
- Transition metals (middle): These elements can form ions with a range of charges, typically +2 or +3, but sometimes higher or lower.
- Group 18 (noble gases): These elements have full electron shells and rarely form ions.
Therefore, the pattern we listed, -1, -2, -3, +/4, +3, +2, +1, 0, accurately reflects the general trend of ion charges across the periodic table, with a slight variation for Group 16.