Which of the following elements would be expected to be particularly stable? 37 O 17 40 Ca O 20 38 K O 19 39 Ar 18

Q: Which element has the greatest first ionization energy? A. C B. B C. N

A:

Q: How can iodine (Z = 53) have a higher atomic number yet a lower atomic mass than tellurium (Z = 52)?

A: An atom is made up of three particles namely, protons, neutrons, and electrons. The protons and…

Q: Calculate the number of protons, neutrons and electrons in: 59 Cu 119 40 122 120 58 30 Sn Ar Те Cd…

A: Calculate number of protons, neutrons, and electrons --

Q: Formulas of alkalis only are given in a line: O a. NaOH, Ca(OH)2, Sr(OH)2 O b. LIOH, KNO3, NH4OH c.…

A:

Q: Write the balanced equations by predicting the products of the following reactions. Include the…

A: The balanced chemical equation for the reaction between sodium and oxygen gas is shown below. The…

Q: What is the % potassium in 1.0 mole of K2PTC16? (K= 39.1, Pt 195.08, CI = 35.45)? a. 1.6% b. 6.1%…

A: Given: Moles of K2PtCl6= 1.0 mol Molar mass of K = 39.1 g/mol Molar mass of Pt = 195.08 g/mol Molar…

Q: Why is Iron (II) oxide not similar to copper (I)oxide

A: Iron (II) oxide contains iron (II) ion and oxide ion. copper (I) oxide contains copper (I) ion and…

Q: QUESTION 20 Arrange the following in order of increasing electron affinity: Fr Fe P. LL

A: Electron affinity is the energy released when one electron is added to its outermost shell.

Q: Account for (explain the reason for) the difference in acidity. HO-AS-OH HO-As-OH OH pKa= 2.12…

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Q: 2 6 3 5 9 The erroneous part in the illustrated set up is 4 O 9 O 1 O 6 7 8

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Q: Which element is the most reactive? A:Cs B:BA C: C D: S

A: The given elements are Cs, Ba, C, and S. From these elements Cs and Ba are the metal element and C…

Q: Which of the following is the correct relationship for the atomic radii?  Cl > Cl- K+ > K  O> S…

A: The correct relationship for the atomic radii is :-               (C) I->I.…

Q: Which one of the following is the number of valenceelectrons each atom of sulfur has? а. 8 O b. 14 О…

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Q: III. What is the neutron-proton ratios of following elements? Which of the elements will be more…

A: In this question, we will determine the Neutron/Protons ratios for these three Element then Identify…

Q: Which of the following elements is easiest to ionize (has the lowest ionization energy)? O A. Si O…

A: Ionisation energy is the minimum amount of energy required to remove the outer most electron from an…

Q: Calculate the free electron per atom of metal A. The electrical conductivity of metal A is 6.0 × 10²…

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Q: For each of the following, give the most specific classification according to type of matter:…

A: Compounds are classified in a group according to their nature or physical and chemical properties or…

Q: What is the most reactive metal to least reactive metal out of: Zinc Tim  iron  magnesium…

A: Metals are good conductor of heat and electricity for example: aluminium, copper whereas non metal…

Q: Element Tm /K 371 923 933 Explain the following in terms of structure and bonding i) i) ii)…

A: Melting point of metals depend upon the strength of metallic Bond.

Q: Of the following, which atom has the smallest atomic radius?   Mg S Sr Te

A: Atomic radius: The distance between the center of the nucleus and the outermost electron is known as…

Q: Which of the following elements has the smallest first ionization energy?     P     K     C…

A: Ionization energy : the minimum amount of energy is required to knock out the most loosely bound…

Q: elements:Cs      K     Al    Se    F    The element with the largest electron affinity is…

A: In the given question, we have to discuss the periodicity in properties of the given element. There…

Q: All of the following are characteristics of metals except: malleable tend to gain electrons in…

A:

Q: Which of the following elements would be expected to have a particularly large energy gap between…

A: The detailed solution of your question given below-- Ionisation energy is the absorbed energy when…

Q: What is the chemical formula of sodium diamminetetrahydroxozincate(II)?     Na2[Zn(NH3)4(OH)2]…

A: What is the chemical formula of sodium diamminetetrahydroxozincate(II)?

Q: Identify which of the following atoms would have the largest radius. A) Mg B) Mn C) Ba D) Bi E) Br

A: As we move from left to right in a period then radii decreases. As we move from top to bottom then…

Q: Which of the following elements has the smallest ionization energy?      Li     Na     Be…

A: Li  , K , Na and Rb belong to same group and among them Li has highest ionisation energy and Rb has…

Q: 19 - Which of the given elements has similar properties with iodine (I) A) Br B) Te C) Ar D)…

A: Generally, the elements of a given group have similar properties due to similar general electronic…

Q: Identify each element below. „La).[Ar].4s?3 (b) [Xe] 6s²4fA452 (c) [Xe] 6s²5ď104A46p3

A: a. No. of electrons = 18+2+5= 25 Therefore element is manganese.

Q: 18 19 20 21 22 23 Write the electron configuration for a carbon anion with a charge of -1. 0 ? X 24

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Q: Which of the following atoms is the largest? O Rb O Li OK Cs O Na

A:

Q: Which of the following pairs of elements have the most similar chemical properties?     O and N…

A: Elements that are present in same group have moat similar properties.

Q: Which of the following atoms has the smallest radius? * K O Na Cs O Li O о

A: The given elements are the member of the first period f the period table.

Q: Lithium occurs naturally as 6-Li and 7-Li. Which isotope is more abundant? a)lithium 5 b)lithium 6…

A: li 7 atom is more stable isotope . 92.5 natural abundance

Q: 7. which isotope of phosphorus kept under water red Black white violet

A: Answer :- White  -------------------------------------------------------------------------

Q: MCQ 36: Halogen that can react with noble gases like Xe is A. F B. CI C. Br D. I

A: Noble gases are those element which have complete octet i.e., they have 8 electrons in their valence…

Q: 67.)Which of the following elements has the highest ionization energy? a. K b. Ca c. Rb d. Sr

A: Ionization energy is the minimum energy required to remove an electron from outer most shell in its…

Q: 11. Write the completed and balanced equation in molecular form with the correct physical state of…

A: In balanced reaction, number of atoms in reactant equal to number of that atom in product. Mass and…

Q: Consider these ionic oxides present in our planet: Na,0, Cao, K,0, Al,O3, Mgo Arrange them in order…

A: The oxides given are Na2O, CaO, K2O, Al2O3 and MgO.

Q: The chemical properties of an element generally depend on:     The atomic mass of the element…

A: Chemical properties are those properties which involve the breaking and formation of the chemical…

Q: 8. lonization of which of the following elements is most energetically costly? A. Ne В. Na1+ C. Mg2+…

A: Ionization energy is the energy required to remove an electron from the outermost shell of an…

Q: Which of the following is an Alkaline earth metal O Li O AI Fe Ca

A: Alkaline earth metal are gropu 2 elements of periodic table.

Q: Which of the following statements is true about actinoides are all synthetic elements O include…

A: Actinoids series consists of 15 metallic chemical elements with atomic number from 89 to 103.

Q: b. What is the % w/w Fe3O4 in the sample? O 10.33% O 32.58% O 23.24% O 48.86% O 21.72%

A: Solution:   Given A numerical problem based on isolation of metals, which is to be accomplished.

Q: Identify the element in the 44th period that is most likely to form an ion with a +2+2 charge. K Mg…

A: +2 ions are formed by alkaline earth metals

Q: What is the reason why carbon is considered a unique element Carbon has two stable isotopes, carbon…

A: Reason why carbon is considered a unique element- Carbon is unique among all the elements because it…

Q: All of these following elements or compounds are chemically unreactive, except: Krypton O Carbon…

A: Given we know about the rectivety of the atoms All of these following elements or compounds are…

Q: A. Physical Properties of Elements“ |1. Symbol 1. Atomic Number 2. Luster 3. Metal/Metalloid/e…

A: The given table has to be filled,

Acid Base Titration

An acid-base titration is the method of quantitative analysis for determining the concentration of an acid and base by exactly neutralizing it with a standard solution of base or acid having known concentration.