07:53The Periodic Table: Atomic Radius, Ionization Energy, and ElectronegativityProfessor Dave Explains745views
Textbook QuestionSuggest a plausible structure for the silicate anion in the mineral thortveitite, Sc2Si2O7.81views
Textbook QuestionDraw the electron-dot structure for CO, CO2, and CO32–, and predict which substance will have the strongest carbon–oxygen bond.83views
Textbook QuestionClassify each element as atomic or molecular. a. neon b. fluorine c. potassium d. nitrogen1034views
Textbook QuestionClassify each compound as ionic or molecular. a. CO2 b. NiCl2 c. Nal d. PCl3592views
Textbook QuestionClassify each compound as ionic or molecular. a. CF2Cl2 b. CCl4 c. PtO2 d. SO3694views1rank
Textbook Questiona. Why is the SO3 molecule trigonal planar but the SO32– ion is trigonal pyramidal?107views
Textbook QuestionWhich compound in each of the following pairs is more ionic?(b) P4O6 or Ga2O396views
Textbook QuestionLocate each of the following elements on the periodic table.(f) Group 5A element that forms the strongest p bonds<IMAGE>106views
Textbook QuestionWhich compound in each of the following pairs is more ionic?(d) BCl3 or AlCl396views
Textbook QuestionWhich compound in each of the following pairs is more covalent?(a) PCl3 or AlF3105views
Textbook QuestionGive one example from main-group chemistry that illustrates each of the following descriptions.d. Polar molecule that violates the octet rule102views
Textbook QuestionUsing the shorthand notation of Figure 22.9, draw the structure of the cyclic silicate anion in which four SiO4 tetrahedra share O atoms to form an eight-membered ring of alternating Si and O atoms. Give the formula and charge of the anion.118views
Textbook QuestionDescribe the structures of the white and red allotropes of phosphorus, and explain why white phosphorus is so reactive.77views
Textbook QuestionGeCl4 reacts with Cl- to give GeCl62-, but CCl4 does not react with excess Cl-. Explain.93views
Textbook QuestionWhat is the hybridization and geometry around carbon atoms in graphene? Explain why graphene is an excellent conductor of electricity.112views
Textbook QuestionWhich of the group 4A elements have allotropes with the diamond structure? Which have metallic allotropes? How does the variation in the structure of the group 4A elements illustrate how metallic character varies down a periodic group?85views
Textbook QuestionGive an example of an ionic carbide. What is the oxidation state of carbon in this substance?82views
Textbook QuestionUsing the shorthand notation of Figure 22.9, draw the structure of the silicate anion in:(a) K4SiO4 (b) Ag10Si4O13What is the relationship between the charge on the anion and the number of terminal O atoms?102views
Textbook QuestionIdentify the group 4A element that best fits each of the following descriptions.(b) Forms the strongest p bonds93views
Textbook QuestionConsider the elements N, Si, Al, S, and F. Identify which of these elements:c. Is a semiconductor89views
Textbook QuestionIdentify the group 4A element that best fits each of the following descriptions.(c) Is the second most abundant element in the Earth's crust90views
Textbook QuestionSelect the group 4A element that best fits each of the following descriptions.(c) Is the second most abundant element in the human body97views
Textbook QuestionThe following pictures represent various silicate anions. Write the formula and charge of each anion.94views
Textbook QuestionFrom the given molar mass and empirical formula of several compounds, find the molecular formula of each compound. a. C4H9, 114.22 g/mol1395views
Textbook QuestionNiobium reacts with fluorine at room temperature to give a solid binary compound that is 49.44% Nb by mass. (c) The compound reacts with hydrogen to regenerate niobium. Write a balanced equation for the reaction.106views
Textbook QuestionConsider the six second- and third-row elements in groups 4A–6A of the periodic table:<IMAGE>Possible structures for the binary fluorides of each of these elements in its highest oxidation state are shown below.<IMAGE>(a) Identify the nonfluorine atom in each case, and write the molecular formula of each fluoride.111views
Textbook QuestionConsider the six second- and third-row elements in groups 4A–6A of the periodic table:<IMAGE>Possible structures for the binary fluorides of each of these elements in its highest oxidation state are shown below.<IMAGE>(b) Explain why the fluorides of nitrogen and phosphorus have different molecular structures but the fluorides of carbon and silicon have the same molecular structure.116views