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Which trend is observed in ionization energy across a period in the periodic tab
Which trend is observed in ionization energy across a period in the periodic table?
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Practice Questions
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Q1
Which trend is observed in ionization energy across a period in the periodic table?
It decreases
It increases
It remains constant
It fluctuates
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Ionization energy generally increases across a period due to increasing nuclear charge, which holds electrons more tightly.
Questions & Step-by-step Solutions
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Q
Q: Which trend is observed in ionization energy across a period in the periodic table?
Solution:
Ionization energy generally increases across a period due to increasing nuclear charge, which holds electrons more tightly.
Steps: 7
Show Steps
Step 1: Understand what ionization energy is. It is the energy required to remove an electron from an atom.
Step 2: Know that the periodic table is organized in rows called periods.
Step 3: Observe that as you move from left to right across a period, the number of protons in the nucleus increases.
Step 4: Realize that more protons mean a stronger positive charge in the nucleus.
Step 5: Understand that a stronger positive charge pulls electrons closer to the nucleus.
Step 6: Conclude that because the electrons are held more tightly, it takes more energy to remove them.
Step 7: Therefore, ionization energy increases as you move from left to right across a period.
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