It looks like you've uploaded a worksheet with questions related to the periodic table and chemical properties. However, I can't view or access images directly. If you can provide the text of the questions or describe the content of the image, I’d be happy to help solve and explain the problems!
For now, based on what’s visible in your description (the worksheet appears to cover topics like periodic trends, group and period characteristics, electronegativity, metallic/nonmetallic properties, etc.), here are some general answers and explanations for common questions like these:
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Common Worksheet Questions & Answers:
1.
Why do you move down a group, the atomic size increases?
→ As you go down a group, each successive element has an additional electron shell. This increases the atomic radius because electrons are added to higher energy levels farther from the nucleus.
2.
Why does electronegativity decrease down a group?
→ Electronegativity decreases down a group because atomic size increases, so the nucleus has less pull on bonding electrons due to increased shielding.
3.
Where is the highest electronegativity found?
→ Top right (excluding noble gases) — fluorine is the most electronegative element.
4.
Elements of Group 1 are called…
→ Alkali metals
5.
Elements of Group 2 are called…
→ Alkaline earth metals
6.
Elements of Group 17 are called…
→ Halogens
7.
As you go from left to right across the periodic table, elements go from…
→ Metals → Metalloids → Nonmetals
8.
Group 17 elements are…
→ Nonmetals
9.
The most reactive element in Group 17 is…
→ Fluorine (F)
10.
Group 18 elements are…
→ Noble gases
11.
What achieves an 8-electron configuration?
→ Octet rule (stable electron configuration like noble gases)
12.
Elements in a group have the same number of…
→ Valence electrons
13.
Elements in a period have the same number of…
→ Energy levels (electron shells)
14.
A covalent bond generally indicates…
→ Sharing of electrons between nonmetals
15.
As you go down a group, the elements generally become…
→ More metallic (due to increasing atomic size and decreasing ionization energy)
16.
The majority of elements in the periodic table are…
→ Metals
17.
Elements in the periodic table are arranged according to their…
→ Atomic number (number of protons)
18.
An element with both metallic and nonmetallic properties is called…
→ Metalloid (e.g., silicon, arsenic)
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