Select the element, from the second period, with the lowest 1st ionization energy? Select the element, from group 15, with the smallest (covalent) atomic radius? Select the element, from the third period, with the least Pauling electronegativity? Which of the group 16 elements should form the most polar bond to hydrogen, based on Pauling electronegativities?

Q: 10. You're preparing for a camping trip. you see two different stoves you can pack for your trip to…

A: We are given propane and hexane fuel to select from. The fuel having higher calorific value will…

Q: The enthalpy change for the reaction between two molecules of carbon oxysulfide (COS) to form one…

A: Enthalpy change= -3.2* 10-24 KJ Convert KJ to KJ/mol = -3.2* 10-24 * 2* 6.023* 1023 = - 3.85472…

Q: 28. Estimate the enthalpy (change in energy) of reaction for 2 SO(g) + O2(g) →2 SO2(g) using bond…

A: enthalpy change of a reaction is defined as they energy used in breaking the bond - energy released…

Q: Based on the bond energies for the reaction below, what is the enthalpy of the reaction? HC≡CH (g) +…

A:

Q: Draw the lewis structure of the neutral atom and the ion of

A: Lewis structure is the representation of atom with its valence shell electrons in a molecule.…

Q: Answer the questions in the table below about the shape of the borane (BH3) molecule. How many…

A: Boron has three valence electrons in its outermost orbital, while, Hydrogen has single electron,…

Q: Consider the element Work (Wr) with an atomic number of 33 and an atomic mass of 81.03 g/mol. The…

A: The oxidation number of the central atom in the oxyanion containing the -ate suffix is the maximum…

Q: DRAW the Lewis structure for the carbonate ion, co,2-. How many identical resonance forms exist for…

A: The picture  D represents  the  correct diagram for overcoming  all rhe intermolecular  forces .…

Q: Which of the following may form +1 or +3 ions, depending on the conditions?  Gold Potassium…

A: Which element form +1 or +3 ions, depending on condition:

Q: 4. The common oxidation number for an alkaline earth metal is +2. (a) Using the Born-Mayer equation…

A: Here, first we have to draw the Born-Haber cycle and then we have to show that CaCl is an exothermic…

Q: Testosterone is an anabolic steroid. The structure of testosterone is shown below. What is the…

A:

Q: The conversion of graphite into diamond is an endothermic reaction (AH = +3 kJ mol-1). C(graphite)…

A: The energy difference of the products and reactants is known as the energy change of a reaction.  If…

Q: Hydrazine, N2H4, burns in oxygen as follows: N2H4   + O2     →    N2   +   2H2O    [The bond…

A: Given reaction: N2H4 + O2→N2+2H2O

Q: . X is isoelectronic with Xe. It reacts with Na ion and forms Na2X. a. Give the electronic…

A: The species having similar count of electrons are basically said to be isoelectronic. So, different…

Q: Draw possible dot structures of PO4³- and NO43- that fulfill the octet rule. One structure is stable…

A: Here we have to write Lewis structures of PO43- and NO43- and to explain on the basis of their…

Q: Draw all of the Lewis structures of O22- which obey the octet rule and use this Lewis structure or…

A: We have to choose Correct statement.

Q: Why are lithium halides covalent in nature?

A: Covalent compounds are formed by the sharing of electrons.

Q: Free Radicals are molecules or ions that have an unpaired electron. They tend to be very reactive…

A: Lewis structure: Lewis structures are diagrams that show the bonding between atoms of a molecule and…

Q: Of the following halogens, which would be most stable as the central atom. F Br Cl l

A: An atom is made up of three major subatomic particles: electrons, protons and neutrons. Protons and…

Q: Consider the element Work (Wr) with an atomic number of 33 and an atomic mass of 81.03 g/mol. The…

A: Given: Molecule/ Ion Names Wr-2 Workide WrO3-2 Workate WrO2-2 Workite…

Q: Which of the following elements is the most electronegative?     phosphorous     Helium…

A: The most electronegative element is given below.

Q: Select the element, from the halogens, with the lowest 1st ionization energy? Which of the listed…

A: 1. Select the element, from the halogens, with the lowest 1st ionization energy? Answer- Iodine…

Q: 2 This Lewis Structure is incorrect because [Ca]+ [:O:]- The metal should be negative and the…

A: The metal should have a +2 charge and the nonmetal should have a -2 charge  20Ca = 2,8,2  Ca++ =…

Q: How does CO2 cause more heat to be retained in the Earth's atmosphere? Which one of the options? 1.…

A: Earth is much cooler and so it emits heat as infrared radiation, which has longer wavelengths.…

Q: Select the more electronegative element in this pair. Select the more electronegative element in…

A: The objective of this question is to identify the more electronegative element in each of the given…

Q: Based on the bond energies for the reaction below, what is the enthalpy of the reaction? HC=CH (g) +…

A: The bond energy is used to describes how much energy is needed to break or form a bond of a molecule…

Q: Write the full electron configuration of Si, Si+4 and Si-4. How many valence electrons are in each…

A:

Q: A nonmetal like oxygen forms both ionic and covalent bonds, depending on the identity of the element…

A: Solution- Calcium (Ca) is a metal and it partially loses two electrons and transfers to oxygen atom…

Q: What is the central atom in phosphoric acid (H3PO4)?

A: The structure of phosphoric acid is,

Q: Determine if the following expressions are true or false: True or false 1. Be is the only element of…

A:

Q: Use heat of formation data from Appendix E to calculate ∆H ° for the following reaction: ClO2 (g) +…

A: Given reaction is : ClO2 (g) + O (g) → ClO (g) + O2 (g)  ∆H° for the following reaction = ?  Also,…