1. An element has the following electronic configuration: [Kr]4d105s25p4 (a) What period does it belong to? (b) What is its group number? (Use group numbers from 1 to 18) (c) What kind of element is it? (Main group metal, transition metal, metalloid, nonmetal?) (d) How many unpaired electrons are there in an atom of this element?    3. (a) Which of the following atoms or ions is diamagnetic? Li+ Ni2+ Al Fe2+ Mn3+ (b) Which of the following atoms or ions is paramagnetic? C4- S 4+ V4+ Se2- Ge4+

Q: A main group element with the valence electron configuration 2s22p3 is in periodic group__________…

A: Given electronic configuration is 2s22p3

Q: 2. (a)What is the ground state electronic configuration of 7Cl. (b)Show the orbital diagram (last…

A: Given  Atom = 17Cl no of electrons in atom = 17

Q: 5. a) Explain the term periodic trend when applied b) Explain why atomic radius decreases across…

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Q: An atomic cation with a charge of +1 has the following electron configuration: 1s 232p°3s²3p°3d'4s'

A: General representation of an atom is   XZA   where  X = element              A = atomic mass =…

Q: An element has the following electronic configuration: [Kr]4d105s25p2 (a) What period does it belong…

A: An element has the following electronic configuration: [Kr]4d105s25p2

Q: 6 The elements of the Periodic Table are created by a variety of processes discussed in the…

A: New atomic nuclei create from pre existing nucleons.The first nuclei form after bing bang through…

Q: Assuming that the seventh period of the periodictable has 32 members, what should be the…

A: Atomic number is the unique property of the compound. It is basically the no. of protons that are…

Q: 7.83 Referring to the periodic table, name (a) the halogen inthe fourth period, (b) an element…

A: Since you have posted multiple sub-parts, the answer for first three sub-parts are given below.…

Q: Explain why the s-block of the periodic table is twogroupswide, the p-block is six-groups wide, and…

A: The reason why s-block of periodic table is two groups wide, p-block is six-groups wide and d-block…

Q: To which blocks do the elements in the fi fth period belong?

A: A periodic table is divided into seven periods and nine groups. The element present in each group or…

Q: 1s2s22p6 is the electron configuration for which element? A B Ne Ar D CI

A: The electron configuration of the element given is .

Q: 7.72 Give the physical states (gas, liquid, or solid) of themain group elements in the fourth period…

A: Intermolecular forces refer to the type of interactions which are present in between atoms or…

Q: The experimentally determinded Bi-Cl bond distance in bismuth trichloride is 2.48Å . Given the…

A:

Q: A main group element with the valence electron configuration 4s24p4 is in periodic group ______ .It…

A: The outer electronic configuration of the element is 4s2 4p4. This implies that it has 6 electrons…

Q: If the experimentally determined Bi-I distance in bismuth triiodide is 2.81Å , predict the atomic…

A: In the given question we have to predict the atomic radius of I from the given compound bismuth…

Q: 2 Identify and explain the error with the order of the elements below.

A: The electronic configuration of given elements will be as following Li= 1s2 2s1 Be= 1s2 2s2 Na= 1s2…

Q: Which elements on the periodic table tend to have the lowest first ionisation energy? What is the…

A: The amount of energy required to eject the most loosely bound electron of an isolated atom in the…

Q: 2)Why did the observed chemistry of thallium mislead Mendelev to place the group 13 element (Tl) in…

A:

Q: Moseley established the concept of atomic number by studyingX rays emitted by the elements. The X…

A: a.

Q: why doea a transition series contain 10 elements?

A:

Q: The ground state of Tin (heavy atom) is ²D3/2, calculate the value of uj?

A: The given ground state of Tin is the ground state term symbol. It defines the state of the electron…

Q: Write the name of element and classify it as a metal, nonmetal, or metalloid. K

A: Given elemental symbol is K. Is it a metal or nonmetal or metalloid?

Q: How does the aufbau principle, in connection with the peri-odic law, lead to the format of the…

A:

Q: By using Slaters rules, calculate the effective nuclear charge of the 22nd electron in bromine

A: Given element: Bromine

Q: 2- If the electronic structure of polonium Po is '6s 4f 5d1° 6p [1], then the number of electrons in…

A: Electronic configuration is defined as arrangement of electrons in shell, subshell and orbitals.

Q: Which element has the ground-state electron configuration [Rn]7s-6d2?

A: 1. The ground state configuration is the lowest energy and most stable arrangement. 2. The natural…

Q: d) Suggest a reason for 5. a) Explain the term periodic trend when applied to trends in the periodic…

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Q: Na+, Ne, O2-, Mg2+, F- Which isthe smallest in size? Which has the lowest ionization energy?

A: Electronic configuration of the given ions/elements is as follows. Na+  =1s22s22p6Ne…

Q: Calculate the frequency and wavelength of electromagnetic radiation associated with the electron…

A:

Q: Which element has the following configuration: [Xe]6s²4f¹12 Enter the chemical symbol for the…

A: Part C  Given :- electron configuration = [Xe]6s24f11  To determine : chemical symbol for this…

Q: The element 13AI27 belongs to - block in the -- group and periodic table: -- group-7, p-block…

A: The group and block of 13Al27 has to be predicted.

Q: Which of these spheres represents F, which represents Br,and which represents Br-?

A: We are given the elements F and Br they belong to the group-17 and they are known as the halogens.…

Q: Before Mendeleev published his periodic table, Döbereiner grouped elements with similar properties…

A: Döbereiner was among the first who arranged the then known elements in groups of three and called…

Q: A. A main group element with the valence electron configuration 35 is in periodic group 2 It forms a…

A: Answer for A.: Mg, +2 Answer for B.: Se, -2

Q: The first five ionization energies (IE, through IE5) of a Period 2 element have the following…

A: The difference in ionization energy between 3rd and 4th is very high . That means higher energy…

Q: Moseley’s experiments on X rays emitted from atoms led tothe concept of atomic numbers. (a) If…

A: a.  Now to see which element is placed next to chlorine in the order of increasign atomic mass we…

Q: As we move across a period of the periodic table, why dothe sizes of the transition elements change…

A: The reason is as given below;

Q: 1 '11Na, 12Mg, 13A1 Which of the two elements has the higher ionization energy?

A: Answer 1)  In Which of the following elements ( 11Na, 12Mg & 13Al ), the two which  has highest…

Q: the solid state

A: In this question, we have to tell that when the temperature is below, what are the changes in the…

Q: Q4: What is the effective nuclear charge (52TE). on electrons in a 4s, 5s and 4d for tellurium…

A: Electronic Configuration of Te, Tellurium =52 = 1s2, 2s2, 2p6, 3s2, 3p6, 4s2, 4p6, 4d10,5s2, 5p4…

Q: 3.Why is the ionization energy of Ca higher than that of K but lower than that of Mg?

A: As we move down the group in the periodic table atomic size is increased hence ionization enthalpy…

Q: The elements of a period in the periodic table are given below in order from left to right: 3li „Be…

A: The period of the given set of elements have to identified and the one which has larger atomic…