choose the reaction that illustrates ▲H°f for Ca(NO3)2

Q: what is the difference between fe(s) and fe3+ at the atomic level?

A: When the neutral atom losses electron then it forms cation.  When the neutral atom accepts electron…

Q: Which of the following has the lowest first ionization energy? Rb Si P Al S

A: as along the period the first ionisation increases and along with the group the first ionisation…

Q: 23Na,88Sr2+,Se,Br-,35CI. Which of the following are ions ? Provide reason

A: Given,  23Na, 88Sr2+, Se, Br-, 35CI

Q: Na,Cr,07 HO- H2SO4

A: Oxidation of alcohol:

Q: (9.7)Which of the following is diamagnetic? O Sn²+ O Cr ΟΝ OF

A: Given,  Which of the following is diamagnetic ?  Options are :  a. Sn2+ b. Cr  c. N  d. F

Q: (ii) Lithium shows a diagonal relationship with magnesium. A) Why are these elements diagonally…

A: Diagonal relationship :    A diagonal relationship is said to exist between certain pairs of…

Q: Which of the following has the largest second ionization energy? O In O Sn OSr Rb O Sb

A: Second ionisation energy is defined as the energy which is required to remove the outermost electron…

Q: using CFT, draw the d-electron configuration of [PtCl4]2¯. Is the ion paramagnetic or diamagnetic

A:

Q: What is the abbreviated electron configuration of the metal ion in Cr2(SO4)3 ?

A: Abbreviated electron configuration for metal ion Cr+3= [Ar]3d3

Q: Which of the following ions would have three unpaired electrons? Cr+2 Sc+3 Rh+3 Ru+3 None of Them…

A: To identify Unpaired electron ,first of all we write electronic configuration of given element by…

Q: Which of the following contains a metallic bond? O NaCI O SO2 O Cu-Zn Alloy O K20

A: When two atoms which are same or different chemically combine together then a chemical bond is…

Q: Which of the following would have the highest ionization energy? Cs K Rb

A: The elements given are K, Rb and Cs.

Q: Which of the following ions is paramagnetic? Select one: 2+ а. Zn 2+ b. Ca 3+ O, C. Sc 2+ d. Zr

A: If electron is paired then diamagnetic. If electron is not paired then paramagnetic.

Q: Which of these ions is isoelectronic to the oxide anion O2 ? A) K* B) Mg²* C) CI D) S? E) Pb2*

A: Isoelectronic species can be defined as the species containing the equal number of electrons. Toe…

Q: Two fourth-period atoms, one of a transition metal, M, and the other of a main-group nonmetal, X,…

A: If M is considered as Iron, the general formula given was M2X3, then the compound has to be Fe2X3.…

Q: Write the electron configuration for the following: A) Fer B) Cu- C) Co

A: The electronic configuration is a representation written for atoms which describe the distributions…

Q: Given the reaction of 2 Ti (s) + 4 Cl2 (g) → 2 TiCl4 (1) %3D 1608. 4 J | what would theAĦ for Ti (s)…

A: In this question, we will determine the value of ∆H for the reaction of Ti(s) + 2Cl2(g) ----->…

Q: What is the electron configuration of Al 3* ?

A: Given :- ionic symbol = Al3+  To determine :- its electron configuration

Q: Write the electron configurations for both Ti (+4) and Ti(+3). Examine their electronic…

A:

Q: Which of the following substances is paramagnetic? KCl MgO CaCl2 NaCl Fe2O3

A: Magnetically different Substances are classified in following main categories - (1) Diamagnetic…

Q: What is the chemical formula of carbon octoxide. * a. COs b. COs В. c. CO, d. CO O D. C. B.

A:

Q: is Cr-Br a polar covalent bond

A: Nature of the bond is based on the electronegativity difference between the bonded atoms. Non polar…

Q: How many unpaired electrons are present in the tetrahedral ion NiCl42-? Unpaired electrons = ____

A: By calculating oxidation state of "Ni" and then by making orbital diagram we can solve this problem.

Q: Whic of the following elements has the highest first ionization energy? a) C b) B c) F d)Li  e)…

A: Since we know that   Ionization energy is the amount of energy needed to remove an electron from…

Q: Of the following reactions below, which represents the second ionization energy of calcium? O Ca(g)…

A:

Q: Which of the following fictitious compounds is more likely to be paramagnetic based off of your…

A: A coordination compound will be paramagnetic if the central transition metal or metal ion has at…

Q: b) [Mn(CN).]+-i Are all Mn-N bond lengths th same in the ion? Explain wh

A: Transition elements form compounds with ligands that are known as coordination compounds. The…

Q: Which of the following atoms has the lowest first ionization energy? OSi O Cs O Ca

A: Ionization energy: Energy required for an isolated gaseous atom to lose one electron to form…

Q: Which element has the largest bonding atomic radius: Sc,Fe, or Au?

A: In the periodic table the elements are arranged according to their periodicity properties. These…

Q: Rank the following cations from the least to the most d electrons: Co3+, Cr2+, Ni2+, Cu2+, Fe3+.

A:

Q: What is the charge on the Cr ions in Cr2O3?

A: We have Cr2O3 , we have to calculate the charge on Cr ion.

Q: Which of the following is paramagnetic? а. [Pt(en)Cl,] b. [Mo(CO)6] С. [Co(NH3)6]3+ d. [CoBr¾]²-

A: According to the question, we need to identify which coordination compound is paramagnetic in…

Q: Which element has an quantum angular moment (L) of 0. OU O Mg O Fe

A: there are 4 types of quantum numbers-  1- principal quantum number 2- angular moment quantum number…

Q: Vitamin B12 is a coordinate compound of  a  Mg b  Co c  Fe d  Zn

A: Vitamin B12 is also known as Cyanocobalamin.  It is a B-vitamin and is largest and complex…

Q: give the charge of the transition metal   Ag2C2O4

A: Answer :  Charge of transition metal Ag is +1.  Ag2C2O4 siver oxalate  is a ionic compound. Which…

Q: Write  electron configurations for each of the following . a. Ti, Ti2+ Ti4+ b. Re,Re2+, Re3+ c. Ir,…

A: a. The atomic number for Ti is 22

Q: 1.) The 3rd ionization energy of Fe is Ei3= +2952kj/mole. What is the longest wavelength of light…

A:

Q: Which following element has the condensed electron configuration [Ar] 4s? 3d ? Lütfen birini seçin:…

A: The element with electronic configuration of  Ar4S23d3 has to be identified.

Q: How many unpaired electrons are present in each species: [Fe(CN)6]³;, [Fe(OH2)613+ (Hint:…

A: Step 1

Q: Solid Mg2B205 contains the "pyroborate" anion. Draw the structure for this ion. What are other…

A: Please find the attachment.

Q: Given the following reactions: 3C =D Kc= 8.33 × 10¬4 %3D D = 3A+ 3B K,=3.32 × 10¯2

A:

Q: Which ion is smaller, Co3+ or Co4+?

A: Cations being positively charged material which formed when electrons are lost from an atom's…

Q: 4) Which of the following is most likely is paramagnetic? a) [Cr(en),]* b) Ni(CO)," c) Co(NH,)J2

A: To determine the megnatism (paramagnetic or diamagnetic) of the compound, first we write the…

Q: How many unpaired electrons are present in the tetrahedral ion FeCl4-?

A: According crystal field theory, when transition metals are bonded to any ligand, their d orbitals…

Q: Explain if Co(H2O)63+ and Fe(NH3)62+ are paramagnetic or diamagnetic

A: Hre, we have to find the magnetic nature of  Co(H2O)63+ and Fe(NH3)62+.

Q: Which of the following processes has the lowest ionization energy? S(g) S*(g) + e O st(g) → s2*(g) +…

A: The energy that is needed for the removal of an electron of an atom from its gaseous state is known…