Part A:  Which element is in the 4th period on the periodic table?   Zr   Zn   Cl   C Part B:  Which element is in Group 13 on the periodic table?   Al   Na   Mg   Sc Part C:  How many energy levels (shells/rings) does Xe have (atomic# 54)?   3   4   5   7 Part D:  How many electrons does Xe have in its outer shell (valence electrons)?   2   4   6   8

Q: Identify the element that fi ts each description. a. an alkali metal in period 6 b. a transition…

A: Hi, since you have posted questions with multiple subparts we will answer the first three subparts…

Q: why dose higher atomic weight elements in the firsts two groups in the periodic table  r(alkaline…

A: First and second group elements are alkali and alkaline earth metals (Alkali metals- Li,…

Q: which atoms ( can be more than 1) listed below have a smaller radius than Aluminum? B Cl Ga N S

A: On moving left to right in a period atomic size decreases due to increase in effective nuclear…

Q: An element X has 16 protons (p+1); 16 electrons (e-1) and 16 neutrons (n0). b) What is the period…

A:

Q: 4. Which statement below about atoms containing more than one electron is FALSE? A) Higher nuclear…

A: This question is related to atomic structure.The history of atomic structure dates back to the times…

Q: How many Valence electrons are in Cl?

A: Number of protons = atomic number    In case of neutral atom ;  Number of protons = number of…

Q: 2. The atoms of which element would have the largest atomic radius? A. Calcium B. Strontium 3. Which…

A: "To get remaining sub-parts solved please repost the complete question and mention the sub-parts to…

Q: 47. Of the elements shown in the Periodic Table, which is the most reactive? * III IV V VI VI| Ne I…

A: 47. We need to determine most reactive element.  48. We need to tell the non metal in group 1.  49.…

Q: 67. Which pair of elements do you expect to be most similar? Why?(a) Si and P(b) Cl and F(c) Na and…

A: Periodic table is an arrangement of elements in the order of increasing atomic number from left to…

Q: Which element has the fewest electrons in its valence shell? Cs O Br Mg P

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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: The ionic radii of K+, Cl−, and S2− are 138, 181, and 184 pm, respectively. Which of the following…

A: Ionic radii of K+ = 138 pm Ionic radii of Cl- = 181 pm Ionic radii of S2- = 184 pm

Q: 69. What does the graph to the right best represent? a) atomic radii of Period 2 b) ionization…

A: Note: They all are very short questions so I am solving all questions. Given: Graph Rare earth…

Q: 68. Which pair of elements do you expect to be most similar? Why?(a) Ti and Ga(b) N and O(c) Li and…

A: The elements belonging to the same group exhibit similar properties. This is because the elements in…

Q: Which of the following metals would be expected to have the smallest atomic radius? A) Cesium (Cs)…

A: In periodic table, on moving left-right the element's electronegativity as well as atomic number…

Q: Which of the elements listed below would have atoms with the largest atomic radius? * O Indium O…

A: First we will discuss about the concept atomic radius. The atomic radius is the distance from the…

Q: Section 3.3) 18 Look at the periodic table and tell how many electrons are in the valence shell of…

A: Element number with atomic number 54 is xenon. Electronic configuration of Xe: [Kr]4d105s25p6…

Q: Q4. Which element is a main-group metal with an even atomic number?(a) K (b) Ca (c) Cr (d) Se

A: To find: The main group metal with an even atomic number.

Q: In Groups 1A-7A, name all elements in each group that has the smallest atomic radius?

A: Atomic radius of an atom is dependent upon the following factors: Effective nuclear charge…

Q: How many valence electrons does an element in each group contain: (a) 2A; (b) 4A; (c) 7A?

A: (a)  Group 2A : Valence electrons = 2 (b)  Group 4A : Valence electrons = 4 (c)  Group 7A : Valence…

Q: For the elements 4X, 9Y, 17Z, which elements are in the same group? O 4X and 9Y O 9Y and 17Z O 4X…

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

Q: Arrange the following elements according to the increase in their atomic sizes; (0, S, Se) S> Se >0…

A: Atomic radius: The atomic radius of an element decreases as we move from left to right in a period…

Q: 1- Write the empirical formula for at least four ionic compounds that could be formed from the…

A: Dear student as per guidelines allowed to answer one question  so I answering first question  MnO4-=…

Q: Use the Periodic Table to arrange the following elements according to increasing atomic size.…

A: Since we only answer up to 3 sub-parts, we’ll answer the first 3. Please resubmit the question and…

Q: Rank the following ions in order of increasing first ionization energy: O2–, Mg2+, F–, Na+

A: Ionization energy: The amount of energy required for the removal of an outermost electron (closely…

Q: Amazing news! Chemists have just discovered a brand new element on an asteroid. Calculate the…

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Q: 3. According to the general trend in electron affinities, which group (or family) of elements tend…

A: Electron affinity is defined as energy released when an electron is added to a neutral atom in…

Q: 5A 6A 7A 1A H. Li 2A ЗА 4A 8A He Ne Ar Kr Be Mg Са Na P. Al Ga Si CI Br According to this…

A: Modern periodic table was prepared by Henry Mosley which is based on modern periodic law according…

Q: 5. Silicon (Si) is in period 3 on the Periodic Table. What does this tell you about this element? O…

A: Relation between period number in periodic table and number of Shells outside the nucleus: Period…

Q: Which of the following statements is NOT TRUE with the electron configuration shown below: 1s2 2s2…

A: Given  Total electron = 30 Electronic configuration is  for zinc. All explanation given in step 2

Q: An atomic property of the elements shown in Figure 9 decreases in the order 5 > 4 > 3 > 2 > 1. Which…

A: Given: Atomic property of the elements shown in given Figure decreases in the order 5 > 4 > 3…

Q: Which of the following elements has the largest second ionizationenergy (IE2)?     B     O…

A: The second ionization energy (IE2) is the energy required to remove electron from the outermost…

Q: isoelectronic with P3–.

A: Cl- is isoelectronic with P3- .is the correct option.

Q: 100. Identify the group of elements with these characteristics: a. This group of elements has a…

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Q: Q2. This question is about the periodicity of the Period 3 elements. (a) State and explain the…

A: Answer: Energy required to release the most loosely binded electron in an isolated gaseous atom is…

Q: Which statement about the radii of atoms and their ions is correct? Cations are smaller than their…

A: Cations are the ions formed by the loss of electron from their parent atom . Na  ----------> Na+…

Q: 4. An ion of iron has an 26 protons, 30 neutrons, and 23 electrons. What are its atomic number,…

A: Calculate atomic number, atomic mass and net charge of the given isotopes ,?

Q: Which electrons experience the greatest effective nuclear charge? Select one: O A. the valence…

A: The various electrons of an element are arranged in different orbits, it is known as electronic…

Q: Which element would you expect to be more metallic? (a) Ra O Mg (b) O I O Br (c) In Al

A: Metallic character decreases as we move across a period in the periodic table from left to right.…

Q: G 1. an arrangement of elements into rows and columns according to similarities in their properties…

A:

Q: Which of the following elements has the highest ionization energy? Ca Al Ne Ba Cl

A: As we move up to down in a group, the number of shell increases and valence electron experience…

Q: Which of the following properties have a tendency to increase with increasing of atomic number in a…

A: Since you have asked multiple questions,we will solve first question for you.If you want any…

Q: Part A: Which element has the electron configuration 1s2 2s2 2p6 3s1   Li   Be   Mg   Na Part B:…

A: Part A: Given, the electronic configuration: 1s2 2s2 2p6 3s1 Count the total number of electrons…

Q: number 1 metal with 3 valence 1. Li electrons 2. Ba metal in the fifth period 3. Kr halogen 4. Br…

A: Periodic table is a table of a chemical elements arranged in the order of atomic number .

Q: 1. How does ionization energy change as you move from left to right across a period? Explain your…

A: Ionisation energy is defined as energy required  to remove an electron from outermost shell of atom.

Q: Write the standard isotopic notation for the following atom a) 3p, 3e , 3n

A: • The values provided in the question are:-     i) Number of protons in an atom = 3  ii) Number of…

Q: 3. Write the symbol for: (a) A hydrogen atom that gained one electron. (b) A magnesium atom that…

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Q: Which of the following elements requires the least energy to remove an electron? As N P Sb

A: Which element required least energy to remove electron ?

Atoms and Molecules

An atom is the smallest unit of an element that possesses all the properties of that particular element. Molecules are the smallest unit of a substance that possess all the properties of that particular substance.