Question
3. Analyze: What trend do you notice? __ 4. Investigate : Gather data for ionization energy across a period . Record in the table below. square square square square square square square square square square square square square square square square 5. Analyze: What trend do you notice? __ 6. Explore Examine other groups and periods in the periodic table to see if the same trends exist. What trends do you see in ionization energy down a group and across a period?
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Jasper
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Answer
# Brief Explanations:The questions are a mix of analysis and data collection related to the periodic trends in ionization energy. Ionization energy generally increases across a period due to increasing nuclear charge and decreases down a group due to increased atomic radius and electron shielding.# Answer:### 3. Analyze: What trend do you notice?# Brief Explanations:Ionization energy increases across a period from left to right due to increasing nuclear charge, which holds electrons more tightly.# Answer:Ionization energy increases across a period.### 4. Investigate: Gather data for ionization energy across a period. Record in the table below.# Brief Explanations:Ionization energy values for the elements in Period 3 (Na to Ar) are collected from standard data sources.# Answer:\begin{array}{|c|c|c|c|c|c|c|c|c|}\hline\ Element\ &\ \ \mathrm{Na}\ \ &\ \ \mathrm{Mg}\ \ &\ \ \mathrm{Al}\ \ &\ \ \mathrm{Si}\ \ &\ \ \mathrm{P}\ \ &\ \ \mathrm{S}\ \ &\ \ \mathrm{Cl}\ \ &\ \ \mathrm{Ar}\ \ \\\hline\ Distance\ (no\ units)\ &\ &\ &\ &\ &\ &\ &\ &\ \\\hline\ Ionization\ energy\ (kJ/mol)\ &\ 496\ &\ 737\ &\ 577\ &\ 786\ &\ 1012\ &\ 1000\ &\ 1251\ &\ 1520\ \\\hline\end{array}### 5. Analyze: What trend do you notice?# Brief Explanations:The trend observed in the collected data shows a general increase in ionization energy across the period from sodium (Na) to argon (Ar).# Answer:Ionization energy increases across the period from sodium to argon.### 6. Explore: Examine other groups and periods in the periodic table to see if the same trends exist. What trends do you see in ionization energy down a group and across a period?# Brief Explanations:Ionization energy decreases down a group due to increased atomic radius and electron shielding, and increases across a period due to increasing nuclear charge.# Answer:Ionization energy decreases down a group and increases across a period.