07:53The Periodic Table: Atomic Radius, Ionization Energy, and ElectronegativityProfessor Dave Explains752views
Textbook QuestionSuggest a plausible structure for the silicate anion in the mineral thortveitite, Sc2Si2O7.83views
Textbook QuestionDraw the electron-dot structure for CO, CO2, and CO32–, and predict which substance will have the strongest carbon–oxygen bond.87views
Textbook QuestionClassify each element as atomic or molecular. a. neon b. fluorine c. potassium d. nitrogen1037views
Textbook QuestionClassify each compound as ionic or molecular. a. CO2 b. NiCl2 c. Nal d. PCl3596views
Textbook QuestionClassify each compound as ionic or molecular. a. CF2Cl2 b. CCl4 c. PtO2 d. SO3699views1rank
Textbook Questiona. Why is the SO3 molecule trigonal planar but the SO32– ion is trigonal pyramidal?108views
Textbook QuestionWhich compound in each of the following pairs is more ionic?(b) P4O6 or Ga2O399views
Textbook QuestionLocate each of the following elements on the periodic table.(f) Group 5A element that forms the strongest p bonds<IMAGE>109views
Textbook QuestionWhich compound in each of the following pairs is more ionic?(d) BCl3 or AlCl397views
Textbook QuestionWhich compound in each of the following pairs is more covalent?(a) PCl3 or AlF3107views
Textbook QuestionGive one example from main-group chemistry that illustrates each of the following descriptions.d. Polar molecule that violates the octet rule105views
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.119views
Textbook QuestionDescribe the structures of the white and red allotropes of phosphorus, and explain why white phosphorus is so reactive.79views
Textbook QuestionGeCl4 reacts with Cl- to give GeCl62-, but CCl4 does not react with excess Cl-. Explain.96views
Textbook QuestionWhat is the hybridization and geometry around carbon atoms in graphene? Explain why graphene is an excellent conductor of electricity.114views
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?86views
Textbook QuestionGive an example of an ionic carbide. What is the oxidation state of carbon in this substance?83views
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?104views
Textbook QuestionIdentify the group 4A element that best fits each of the following descriptions.(b) Forms the strongest p bonds98views
Textbook QuestionConsider the elements N, Si, Al, S, and F. Identify which of these elements:c. Is a semiconductor90views
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 crust93views
Textbook QuestionSelect the group 4A element that best fits each of the following descriptions.(c) Is the second most abundant element in the human body101views
Textbook QuestionThe following pictures represent various silicate anions. Write the formula and charge of each anion.96views
Textbook QuestionFrom the given molar mass and empirical formula of several compounds, find the molecular formula of each compound. a. C4H9, 114.22 g/mol1404views
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.110views
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.114views
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.118views