Jump to content
Main menu
Main menu
move to sidebar
hide
Navigation
Main page
Recent changes
Random page
freem
Search
Search
Appearance
Create account
Log in
Personal tools
Create account
Log in
Pages for logged out editors
learn more
Contributions
Talk
Editing
Openai/6946f4fa-e8bc-800b-b77e-c62f6390a97c
(section)
Add languages
Page
Discussion
English
Read
Edit
Edit source
View history
Tools
Tools
move to sidebar
hide
Actions
Read
Edit
Edit source
View history
General
What links here
Related changes
Special pages
Page information
Appearance
move to sidebar
hide
Warning:
You are not logged in. Your IP address will be publicly visible if you make any edits. If you
log in
or
create an account
, your edits will be attributed to your username, along with other benefits.
Anti-spam check. Do
not
fill this in!
=== ## === 主題：等電子比較｜VSEPR｜混成｜分子形狀｜鍵角｜鍵長 ==== ### ==== EN Which ion is larger in each of the following pairs? 中 下列每一組中，哪一個離子的半徑較大？ ===== - 等電子系列： → 核電荷越大，半徑越小 ===== * 同一元素： → 電荷越正，半徑越小 ===== 逐組比較，選擇： ===== * 電荷較小者 * 或核電荷較小者 ===== ✅ d ===== ==== ### ==== EN Select the element or compound that best fits each description: (i) most metallic (ii) most covalent (iii) highest electronegativity 中 選出最符合下列性質者： (i) 金屬性最強 (ii) 共價性最強 (iii) 電負度最高 ===== - 金屬性：左下角最大 ===== * 共價性：非金屬與非金屬 * 電負度：右上角（不含稀有氣體） ===== - (i) Ba：鹼土金屬、活潑 ===== * (ii) N₂O：非金屬間鍵結 * (iii) O：電負度高 ===== ✅ e. Ba, N₂O, O ===== ==== ### ==== EN How many electron pairs surround the central atom in XeF₂, and what is its molecular geometry? 中 XeF₂ 中心原子周圍有幾對電子？其分子形狀為何？ ===== - Xe：8 價電子 ===== * XeF₂： - 2 鍵對 - 3 孤對 → 共 5 電子對 電子幾何：三角雙錐 孤對佔赤道 → 分子形狀線形 ===== ✅ e. 6 electron pairs, linear ===== （⚠️ 含鍵對＋孤對） ==== ### ==== EN Which molecule has a square planar geometry? 中 哪一個分子具有'''正方平面（square planar）'''結構？ ===== - AX₄E₂ → square planar ===== ===== - XeF₄： - 4 鍵 + 2 孤對 - 孤對位於軸向 - 鍵在同一平面 ===== ===== ✅ d. XeF₄ ===== ==== ### ==== EN What is the molecular geometry of XeF₅⁺? 中 XeF₅⁺ 的分子形狀為何？ ===== - Xe：8 電子 − 1（正電） = 7 ===== * 5 鍵 + 1 孤對 → 6 電子域（八面體） 分子形狀：square pyramidal ===== ✅ b. square pyramidal ===== ==== ### ==== EN What is the approximate Cl–Kr–Cl bond angle in KrCl₄? 中 KrCl₄ 中 Cl–Kr–Cl 的鍵角約為多少？ ===== - KrCl₄： - 4 鍵 + 2 孤對 - square planar ===== * 鄰鍵角：90° ===== ✅ a. 90° ===== ==== ### ==== EN Which molecule has the largest bond angle? 中 下列哪一個分子具有最大的鍵角？ ===== - sp（線形） → 180° ===== * sp² → 120° * sp³ → ~109.5° ===== - HCN： - C 為 sp 混成 - 線形結構 → 鍵角 180° ===== ===== ✅ c. HCN ===== ==== ### ==== EN Which species has the greater N–O bond length, NO₂⁻ or NO₃⁻? 中 NO₂⁻ 與 NO₃⁻ 中，哪一個的 N–O 鍵較長？ ===== : ===== ===== - NO₂⁻：平均鍵階 = 1.5 ===== * NO₃⁻：平均鍵階 = 4/3 ≈ 1.33 → 鍵階較小者鍵較長 ===== ✅ b. NO₃⁻ ===== ==== ### ==== EN What is the molecular geometry of NI₃? 中 NI₃ 的分子形狀為何？ ===== - N：3 鍵 + 1 孤對 ===== * 電子幾何：四面體 * 分子形狀：三角錐 ===== ✅ a. pyramidal ===== ==== ### ==== EN What is the approximate bond angle in H₂Se? 中 H₂Se 的 H–Se–H 鍵角約為多少？ ===== - 16 族氫化物： - H₂O：104.5° - H₂S：~92° - H₂Se：~90° ===== ===== ✅ e. 90° =====
Summary:
Please note that all contributions to freem are considered to be released under the Creative Commons Attribution-ShareAlike 4.0 (see
Freem:Copyrights
for details). If you do not want your writing to be edited mercilessly and redistributed at will, then do not submit it here.
You are also promising us that you wrote this yourself, or copied it from a public domain or similar free resource.
Do not submit copyrighted work without permission!
Cancel
Editing help
(opens in new window)
