Boron 11 5 Sodium 11 11 12 11 Na 39 Y 89 39 50 39 Yttrium 29 35 Соpper 64 29 29 Cu Tc 98 43 Pb 207 204 81 Thallium H. 12 Carbon 7 56 Ba Calcium 14 Si 18 Argon 12 12 Mg Sp is

Q: Which elements are alkali metals? 01. Hydrogen O2. Helium O 3. Lithium 04. Beryllium OS. Boron 6.…

A: Alkali metal-any of 6 chemical element that make up group 1 of the periodic table -namely lithium…

Q: 1A 8A H 2A 3A 4A 5A 6A 7A He Li Be BCNOF Ne Na Mg 3B 4B 58 6B 7B 18 28 A1 Si Ps CI Ar 8B K Ca Sc Ti…

A:

Q: 1A 8A H 2A 3A 4A 5A 6A 7A He Li Be an 1 ON 3 8 Na Mg 38 4B 5B 68 78 r 8B H 1B 2B AI Si PS CI Ar K Ca…

A:

Q: When magnesium ribbon is burned inside dry ice slabs (carbon dioxide), black specks (carbon) and…

A:

Q: Aluminum 13 (AI)_ 13 Hydrogen (H) 1 1 Making anion Sulfur (S) 16 16

A:

Q: The formula for strontium nitride is A. SrN2 B. Sr(NO2)2 C. Sr(NO3)2 D.…

A:

Q: 1A 8A H 2A 3A 4A SA 6A 7A He BC NO F Ne Li Be Na Mg 3B 4B 5B 68 78 8B - 1B 2B AI Si P S CI Ar K Ca…

A: Given, Electronic configuration of a monoatomic ion having +2 charge = 1s22s22p63s23p6  Total number…

Q: H 2A 3A 4A 5A 6A 7A He Li Be ƏN 3 O N 8 Na Mg 38 4B 58 6B 78 r 88 ¬ 18 28 HI SI P S CI Ar K Ca Sc Ti…

A: First write the Complete electronic configuration of atom.

Q: 4.53 Classify the following redox reactions as combination, decomposition, or displacement:

A: Since you have posted questions with multiple subparts, we will solve the first three sub parts for…

Q: 55 3. jA 25 Mn2+ ion has protons, neutrons, and electrons. а) 23; 30; 25 с) 30;B 25; 23 b) 25; 30;…

A: We will identify proton neutron and electron

Q: 1A 8A H 2A 3A 4A 5A 6A 7A He LI Be aN 0N 3, 8 Na Mg 38 4B 5B 6B 7B 1B 28 AI Si PS CI Ar L 88 - K Ca…

A:

Q: Fluorine 9 F 18.998 Iron 26 Fe 55.845 # Protons: # Electrons: # Neutrons: 10 # Protons: # Electrons:…

A:

Q: number 9, mass number 18, charge of 1- O p: 9; n: 9; e: 12 Op: 9; n: 9; e: 8 Op: 9; n: 9; e: 9 Op:…

A: Given the atomic number of the species = 9  mass number of the species = 18 charge of the species =…

Q: [1] (CH3)½CCI, AICI3 [1] Cl2, FeCla с. [2] KMNO4 [2] Zn(Hg), HCI NO2 [1] Br2, hv [1] CH3NH2 d. O2N-…

A: Organic reaction mechanisms:   As per our guideline we have to answer first three questions only.

Q: 1A 8A H 2A 3A 4A SA 6A 7A He Li Be BCNOF Ne Na Mg 38 48 5B 6B 7B - 8B - 18 28 AI Si P S CI Ar K Ca…

A: Electronegativities increase from left to right across the periodic table, because of the increase…

Q: b) 781 g C3H,Cl, c) 0.756 g calcium hydroxide d) 9.94 g cobalt(III) bromide e) 8.80 g ammonium…

A:

Q: (1) Li(CH;CH,),Cu (2) H;O* Br Pd(OAc)2 CN (b) PPH3, EtzN H,NNH, (c) КОн Li, NH3 (d) (CH3);COH Br…

A: “Since there are multiple sub-parts in this question and it is not mentioned that which one has to…

Q: 8A 1A H 2A 3A 4A SA 6A 7A He Lu Be BCNOF Ne Na Mg 38 48 5B 6B 78 r BB 18 28 AI si PSCI Ar K Ca Sc TI…

A:

Q: 1. LDA, THF; Mel 2. LDA, THF; Mel 3. EtLi (2 equiv), Cul (1 equiv), THF; then Br 3.

A: ->LDA is base which can abstract most acidic hydrogen and form enolate ion when react with…

Q: → 2NH3 (9) 1. N0 + 3H, 2. CO20) 2(g) CO(NH,2) + H,O (6), + 2NH, 2(g) 3(g) 3. C,H210) + H,O (a) 2CO,…

A: Since you have posted a question with multiple sub-parts, we will solve first three subparts for…

Q: 28) 8.42 x 1027 atoms of tin 29) 6.39 x 1018 atoms of sulfur

A: Given  8.42 × 1027 atoms of tin  6.39 × 1018 atoms of sulfur  5.99 × 1030 molecules of SiO2

Q: .763 Za" (ag) +2+2n(s) -166 A*() + Alja) Mg*(a) +2e Mgla) O zn Osn

A:

Q: 1A H 2A Li Be Na Mg 3B 4B 5B 68 7888 3A 4A 5A 6A 7A He BCN OF Ne S Cl Ar 1B 2B Al K Ca Sc Ti V Cr Mn…

A: In chemistry electronic configuration is distribution of electrons of an atom or molecule in atomic…

Q: 27. How many electrons does 207Pb+2 have? a. 80 b. 82 С. 84 d. 125 28. How many electrons does Ga+3…

A: The atomic number of an atom is the number of protons present in the atom. For a neutral atom, the…

Q: Mass number 63 29CU+2 15P-3 31 Cu: 34; P: 16 OA. Cu: 65; P: 28 В. Cu: 61; P: 34 OC. Cu: 31; P: 12 D.…

A: So we’ve to calculate the total number of electron present in the above mentioned ions.

Q: (c) 1. O, -78 °C ? 2. Zn, HOAC

A: O3 is oxidizing agent . it oxidised alkene to carbonyls.

Q: Calculate the % Composition of the elements that make up Sodium Nitrate. % Na , % N, % O a)…

A: The formula of sodium nitrate = NaNO3 The mass of NaNO3= 85g/mol.

Q: Copper(II) sulfate Ba(OH)2 CaS PbS (NH4)3PO4 FeSO4 Aluminum phosphate Lithium sulfide

A: A chemical formula specifies the number of atoms of each element in a compound molecule using the…

Q: 11. KBr. 12. water 13. CuSO, 14. MgF: 15. Na,SO 16. Cu(NO): 17. NH.Br. 18. Fe(PO.) 19. Mg.N:, 20.…

A: Molecular weight or formula weight can be easily calculated by individual atomic masses of…

Q: 1A H2A Li Be 8B 3A 4A 5A 6A 7A He B CN OF NE 1B 2B Al Si P S Cl Ar Na Mg 3B 4B 5B 6B 7B K Ca Sc Ti V…

A: We have to tell atomic number of the given configuration.

Q: 31 а. b. #Ti + ? 252CF SP + ? → Sc 142Ba + ? + 4,n 22 C. 98 56

A: A nuclear reaction is said to be balanced if the sum mass numbers, sum of atomic numbers and total…

Q: H 2A 3A 4A 5A 6A 7A He Li Be BCNOF Ne Na Mg 38 4B 5B 6B 7B 8B 1B 2B Al Si P S CI Ar K Ca Sc Ti V Cr…

A: Answer :-  (1) Lithium (Li)  (2) Chlorine (Cl)

Q: sample of aluminum contains 2.91 × 1022 atoms of aluminum. What is the mass of this sample?  [Molar…

A: Given that: Molecules of Al = 2.91×1022 atoms  Molar mass of Al = 26.98 g/mol  1 mol = 6.023×1023…

Q: 1. BZOOBZ, NBS, CCI4 2. Mg, THF; then Pd°Ln, PhBr 3. HNO3, H2SO4 4. Zn, HCI

A:

Q: 1A 8A H 2A 3A 4A 5A 6A 7A He BCNO FNe Li Be Na Mg 38 4B 5B 6B 7B 8B - IB 2B AI Si P S CI Ar K Ca sc…

A: Given  Name of atom  = Sodium atom  Complete electronic configuration = ?  Name of atom = Lithium…

Q: НО Bu Bu 1; 2 `Me `Me "Ме + O2N O2N 1. 9% 2. 88% N°C 1. 91% 1. BuLi, THF, -78 °C 2. 12% 2. BuLi, 0,1…

A:

Q: 19.18. What is the empirical formula of a mineral contg. 3.37% HO; 19.10% AlO: 21.00% CaO; and…

A: Empirical formula is the simplest formula of a compound which show ratio of atoms or molecules in…

Q: Elements Reactants 1 Reactants 2 Nuclear Reaction Deuterium Tritium Helium (Stable) Lithium

A: Nuclear reactions are those in which fusion and fission process are involved. In these reaction…

Q: 1. AGNO _MgCl, AgCl Mg(NO,), 2. C.H, cO, HO 3. P,O, 4. Zn _Pb(NO,), Zn(NO,), Pb -> + 5. SiO, + HE…

A: A chemical reaction is symbolic representation of the conversion of substances to new substances. In…

Q: Balance each reaction and write its reaction quotient, Q꜀:

A:

Q: 13) If you measured a mass of 245 g of Iron, you would have atoms Fe. * O 4.39 O 2.64e24 O 8.24e27 O…

A: To calculate the number of atoms or molecules of an element we must have the number of moles of that…

Q: H CO,Me 1. LDA 1. LDA THF-78°C THF-78°C 15. Br 2. EtBr 2. 90%

A: The reaction is as follows:

Q: 1A 2A 8A Atomic Number 1 E ЗА C 1 W 4A 5A 6A 7A G Zy 6. 4. K V P. Ad 8. 6. 10 11 12 13 14 15 Q U H.…

A: Amount of product formed is defined with the help of Limiting reagent using stoichiometric…

Q: 1A 8A H 2A 3A 4A 5A 6A 7A He BCNO F Ne Li Be Na Mg 3B 4B 5B 6B 7B 8B - 1B 2B AI Si P S CI Ar K Ca sc…

A:

Q: 1A 8A H 2A 3A 4A SA 6A 7A He CNOF Ne Li Be В B 2B ASi PS CI Ar Na Mg 3B 4B 5B 6B 7B г 68 K Ca Sc TiV…

A: Isoelectronic species contains same number of electrons in each species.The atomic number of…

Q: OH 1a. NaH (1.0 eq), THF, 0 °C 1b. TBSCI 3. OEt C1 C2 2a. Ph3P, DEAD, PHCO2H, THF 2b. LIOH, MeOн,…

A: Mechanism is given as

Q: Anions Oxide Phosphide lodide Se Iron (II) FeCl Iron (III) Iron (III) Sulfide Phosphide Fe FeP…

A: For an ionic compound to form the charge of anion and cation should balance so that the net charge…

Q: Which elements are gases? 01. Hydrogen O 2. Helium O 3. Lithium 04. Beryllium O 5. Boron O 6. Carbon…

A: Which elements are gases from atomic number 1 to 40 = ?

Q: Mg(NO,), Mg: N: O: 2) (NH,),PO, N: H: O: P: 3) Al,(SO.); Al: S: O:

A:

Q: LAu Br2 0 Na 0DLDA 2)Br : )LDA )CH3I CUD 70NA 2) CH3I O HCON 2)Br H30t D Na H Its0+ 2Br

A: Product of the reaction has to be identified.(a)Acid-Catalysed Bromination of Ketones: ketones…

Crystal Structures

Solids are present all around us. They have different properties and applications. Diamond and graphite are two well-known solids. Diamond is the hardest material in the world and is used in making jewelry. Graphite on the other hand is soft. The lead of your pencil is graphite. Why are they so different in appearance and properties despite the fact they are chemically the same? Both are allotropes of carbon. The answer lies in the structure, the way constituent particles are arranged in the solids.