An atom of certain element has 15 electrons in its ground state ( a ) What is the ground state electronic configuration ? ( b ) Is it paramagnetic or diamagnetic ? ( c ) How should this element be classified ?

Q: Describe and apply the periodic trends for first ionization energy. Identify which of the following…

A: The elements given are Mg, Sr, In, Br and Pb.

Q: Transition metal cations have no s electrons, only d electrons in their outer levels . Explain?

A: The given statement is, Transition metal cations have no s electrons, only d electrons in their…

Q: Which two elements have 3 unpaired 3d electrons in the ground state?

A: As per "Aufbau principle", the orbital that contains less energy gets filled first as compared to…

Q: Given the valence electron orbital level diagram and the de- scription, identify the element or ion.…

A:

Q: 6.91 Explain why the ground-state electron configurations of Cr and Cu are different from what we…

A: Solution :    Electronic configuration in Chemistry shows the distribution of electrons in an atomic…

Q: Scientists have speculated that element 126 might have amoderate stability, allowing it to be…

A: To determine the electronic configuration Aufbau principle will be followed. Aufbau principle :…

Q: 7.26 Define atomic radius. Does the size of an atom have aprecise meaning? Explain.

A: To find: Definition of atomic radius.  Does the size of an atom have a precise meaning? Explain

Q: Which substance has the larger first ionization energy, sodium or rubidium? Why?

A: Sodium has the larger first ionization enegy as compare to rubidium

Q: Determine the radius of a tantalum atom.

A:

Q: An element that has the valence electron configuration 3s1 belongs to which period and group?…

A: Given that the valence electron configuration is : 3s1 Thus, from the valence electron configuration…

Q: The ground state electron configuration of Sc is

A: Atomic number Sc =21 We know that ,  For neutral atom Atomic number = number of protons= number of…

Q: Which of the following electrons experience the greatest effective nuclear charge?

A: A particular electron in a multi-electrons system does not feel the entire electron nuclear charge…

Q: For the following categories of elements, state the possiblenumber(s) of electrons in their…

A: The electron configuration of an element describes how electrons are distributed in its atomic…

Q: Atoms of which element, indicated by letter on the periodic table, is expected to have the smallest…

A: Atomic radius in periodic table: In period moving  left to right  atomic radius decreases,. And In…

Q: For Mg, P, and Cl, identify which has thea. largest atomic sizeb. highest ionization energyc.…

A: The energy is needed to remove an electron from its neutral atom is known as ionization energy.

Q: (1) What is the element with an electron configuration of 1s22s22p 3s²3p54s²3d5? (2) What is the…

A: Identify the element by using its electronic configuration ?

Q: For the set of elements LiNeand Na, which element has the largest atomic radius? Explain any…

A: The distance between the nucleus and the outermost electron of the element is known as its atomic…

Q: 7.17 A neutral atom of a certain element has 34 electrons. Consulting only the periodic table,…

A: Every atom has a nucleus, the nucleus is a heavy portion in the centre of an atom consisting of…

Q: In what region of the periodic table will you find elements with relatively high IEs? With…

A: IE here refers to the ionization energy of an atom. It is the energy required by an isolated atom to…

Q: Predict the trends in ionization energy as successive electrons are removed, including the…

A: Ionization energy is defined as the energy required to remove the electrons from the valence shell…

Q: 6.90 Define the following terms and give an example of each: lanthanides, actinides.

A: The given terms lanthanides and actinides has to be defined.

Q: The ground state electron configuration of copper is ________.

A: Ground state Electronic configuration- In this electrons are in lowest energy state and most stable…

Q: Given the valence electron orbital level diagram and the de- scription, identify the element or ion.…

A:

Q: This is about Quantum Numbers, Electronic Configuration, and Periodic Trends.  Following are…

A:

Q: (c) Is an isolated arsenic atom in the ground state paramagnetic or diamagnetic? Explain briefly.…

A: c)  The atomic number of As is 33 . Its electronic configuration in ground state is [Ar]3d104s24p3 .…

Q: 2.12 (a) What electron subshell is being filled for the rare earth series of elements on the peri-…

A: A sub-shell is a collection of orbitals. Sub-shells come in a variety of shapes and sizes, including…

Q: What is the abbreviated electron configuration of element Platinum (Pt)?

A:

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: 1. What is the cause of the atomic emission spectrum of an element?

A: Given: To give the causes of atomic emission spectrum of an element

Q: The atomic number of an element is 73. Is this element diamagnetic or paramagnetic?

A: Whenever two electrons are paired together in an orbital, or their total spin is 0, they are…

Q: Suppose that the atomic radius of hydrogen is defined as the radius of the sphere within which there…

A: Atomic radius is the distance between the central of nucleus of an atom and the outermost electron…

Q: The energy needed to ionize an atom of element X when it is in its most stable state is 500 kJ…

A: The energy of a single photon is known as the photon energy. The quanta of energy is directly…

Q: Shells are denoted by the letter "n," which indicates the number of the shell. How many orbitals are…

A: For a given value of n the total no of orbital     = n2 Here the Value of n = 1 we have to find out…

Q: (2) The element with an electron configuration of 1s22s22p63s2 is in group ______and period ____.

A: Electron configuration of Magnesium:

Q: . If the principal quantum number n were limited to the rangefrom 1 to 6, how many elements would we…

A: The principal quantum number is n and it can have any integer value from 0 to ∞.

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: State the Aufbau principle, and explain the role it plays in classifying the elements in the…

A:

Q: How do the periodic trends in metallic character compare to those forionization energy?

A: solution- periodic trends in metallic character compare to those for ionization energy is , Metal…

Q: Nitrogen has a greater first ionization energy than phosphorus. What is the best evidence to support…

A: Nitrogen has atomic number 7 and that of phosphorus is 15   N7 - 1s22s22p3 P15 - 1s22s22p63s23p3 As…

Q: Describe the procedure of writing the electron configuration for an elementbased on its position in…

A: The periodic table is a tabular arrangement of all the known elements based on the atomic number and…

Q: Arrange the following in order of increasing atomic size. Be, Ga, At, Rb

A: The question is based on the concept of periodic properties of the elements. we have to arrange the…

Q: Define the following terms and give an example of each: lanthanides, actinides.

A: The given terms lanthanides and actinides has to be defined.

Q: Would you expect the ionization energy of Li+ to be lessthan, greater than, or the same as the…

A: Given :  Explain ionization energy of Li+ is < or > or = to Li.   Explanation: Ionization…

Q: Which element has the electron configuration 1s²2s²2p⁶3s²3p⁶4s²3d¹⁰4p²?

A: Given :- electron configuration :  1s²2s²2p⁶3s²3p⁶4s²3d¹⁰4p²  To determine :- name of element  last…

Q: What object is represented by the half arrows inan orbital diagram? What does the direction of the…

A: The atom is composed of three subatomic particles out of which electrons are present in the energy…

Q: Write the Electron Configurations for Transition Metals?

A: d-block is region of the periodic table where the transition metals are found.