For the abbreviated electron configuration for the element with 48 protons, which noble gas would you use as a start

Q: Which subshell is represented by the lanthanides family? Which subshell is represented by the…

A: Lanthanides and actinides  are f-bolck elements.

Q: Rank the elements according to their metallic character. Most metallic Least metallic Answer Bank Si…

A: • As we move from top to bottom in a group, the atomic size increases and hence, the ionisation…

Q: An electron configuration of 1s2 2s2 2p6 3s2 3p6 4s2 represents which element? Group of answer…

A: Answer:- This question is answered by using the simple concept identification of element using…

Q: 5. Without using a periodic table or any other references, fill in the correct box in the periodic…

A: Periodic table represents the systematic arrangement of elements in which the properties of these…

Q: Use the periodic table to give the symbol of the element that meets the following conditions:a. has…

A: In periodic table there are list of elements which all having different properties and there unique…

Q: Choose the statement below that is TRUE for an element whose valence shell electron configuration is…

A:

Q: An element is located in period 5 and has 46 protons. Its electronic configuration could end in:…

A: The element consist of 46 protons which means its atomic number is 46. This is because the number of…

Q: Which one of these has the largest first ionization energy?   Group of answer choices Mg Ca Ba Sr

A: Ionization energy and its trend in a periodic table:

Q: An element has the electron configuration [Kr]5s24d105p2.  The element is a(n) Group of answer…

A: The element has the electron configuration [Kr]5s24d105p2. The element is Tin. Tin is a chemical…

Q: Isotopes  are atoms of same element with same atomic mass and different atomic numbers. Select one:…

A: Answer : isotopes are atoms of same element with same atomic mass and different atomic number is a…

Q: Then for each question, enter the number listed (1-4) before the element, for elements that satisfy…

A: Allotropes which have different physical properties while same chemical properties in given atoms…

Q: TRUE OR FALSE 28. Alkali metals reacts with water to form metal hydroxide and hydrogen gas. 29.…

A: 28. True Example 2Li(s) +2H2O(l) --->2LiOH(aq) +H2(g)

Q: Which element would have a full outer shell of electrons if it gained three electrons? *…

A: A) nitrogen has an electronic configuration of 1s22s22p3 or 2,5 in shells.

Q: Name the element or ion: Fourth period d-block species with exactly 3 filled shells. (there are…

A: Answer:

Q: The elements with atomic numbers 35 and 53 have similar chemical properties. Based on their…

A: In periodic table elements are arranged in period and groups on the basis of their atomic mass. The…

Q: Rank the elements according to their metallic character. Most metallic Least metallic Answer Bank C…

A:

Q: Which of the following statements is not true? Group of answer choices Elements in the upper right…

A: Ionization energy is the energy required to remove the outermost electron from the valence Shell of…

Q: completes the 5s sublevel. Express your answer as a chemical symbol. has one electron in the 2s…

A: An element that completes 5s subshell is strontium.  The chemical symbol is Sr.  The electron…

Q: The electron configuration of an element is [Ne]3s?3p4. The element is a(n) O metal. O actinide. O…

A: The electronic configuration of element given is [Ne] 3s23p4

Q: Write the complete electron configuration (spdf notation) for each of the folle A) O B) Ti C) Mg

A: An atom is smallest unit  of matter and it forms a chemical element.

Q: ________ have the lowest first ionization energies of the groups listed. Group of answer choices…

A: ________ have the lowest first ionization energies of the groups listed

Q: What is the name of the elements with the followihg atomic numbers: Atomic Number Element 41 60 91

A: Write name of the given atomic number---

Q: In a mass spectroscope, what causes the atoms of an element to follow the curved path of the…

A: In mass spectroscopy, the gaseous sample molecules are converted into charged particles by the ion…

Q: e nucleus plus the inner shells of electrons (non-valence) constitute the core of the atom. Core…

A:

Q: Write the condensed electron configuration for the following atoms, using the appropriate noble-gas…

A: The distribution of electrons in atomic or molecular orbitals of an atom or of a molecule is known…

Q: An X element atom with four electrons with a value of mL each =1 its atomic number is

A:

Q: Which of the following families from the periodic table are also groups? Select all that apply.…

A:

Q: Which element atom has three shells in electron configuration? Group of answer choices potassium…

A: Element atom having three shell means, maximum value of principle quantum number n=3 so,

Q: Which element consists of positive ions immersed in a “sea” of mobile electrons ?

A: Given : element consists of positive ions immersed in a “sea” of mobile electrons.

Q: Complete the sentences below.  If the element name is provided, complete the sentence with the…

A: Electrons are negatively charged particles. They revolve around nucleus in outermost shels of an…

Q: Which element in each pair has its valence electrons farther from the nucleus? a. sodium and…

A: a. sodium and magnesium

Q: Write the electron configuration for the following elements and ions using spdf notation (without…

A: Electronic configuration of elements and ions

Q: Atomic radius decreases as you move left to right even though there are additional protons ,neutrons…

A: As we move across the period the atomic number increases and the mass number also increases. Hence…

Q: How many protons, neutrons and electrons are in the 77Se isotope? What is its electronic…

A: An atom has 3 subatomic particles electron ,proton and neutron

Q: Consider starting with a fluorine atom with 9 electrons. If it were possible to remove one proton…

A: The addition of electron or removal of proton will change the atom radius because of change in…

Q: Electrons configuration this are the elements Fe Rb Li C

A: Electronic configuration of elements Fe, Rb, Li and C are given as follows.  Atomic number of…

Q: In a period, the element with the most exothermic electron affinity is the _____ and the one with…

A: We have to fill the element with the most exothermic electron affinity is the _____ and the one…

Q: What is the neutral atom that has its first two energy levels filled, has 44 electrons in its third…

A: The number of electrons in the energy levels of the atom can be determined on the basis of their…

Q: Atoms with the same atomic mass but different atomic number is: Isotope Allotrope Isotone Isobar

A: Isotope= Atoms with same atomic number but different mass number is called isotope. (12C and 13C…

Q: O has ____ unpaired electrons. P3– has ____ unpaired electrons

A:

Q: he 6th Shell of an atom has a maximum capacity to contain 36 electrons. Select one: True Fals

A: False The number of electrons that can fit into shell =   2n2where n= Shell number = 1,2 ,3 ,4…

Q: Arrange the elements from most to least metallic character. Most metallic character Least metallic…

A:

Q: What is the neutral atom that has its first two energy levels filled, has 4 electrons in its third…

A: Given: First two energy levels are completely filled. Atom is neutral. And the third energy level…

Q: 3d energy sublevel?

A:

Q: tures UI ine energy he light, in the visible region, different elements show different colors. The…

A: answer 10)  Stars are made of very hot gas. This gas consists 87% hydrogen & 90% helium and 3%…

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: Ionization energy decreases going down a group because _____. answer choices A.   Atoms are further…

A: Ionization energy :- The minimum amount of energy required to remove an electron from the outermost…

Q: What element has 6 electrons in its highest energy shell? Group of answer choices Magnesium Aluminum…

A:

Q: Rank the following elements in order of increasing atomic size: carbon, silicon, Florine

A: We have find out atomic size.

Q: What is the reason for the trend in Ionization energy going across a period? answer choices answer…

A: Ionization energy of an element is the minimum amount of energy required to knock out one electron…