Mendeleev arranged the elements according to atomic weight and chemical reactivity. atomic number and atomic weight. electron configuration and atomic weight. physical state and relative abundance. a random game of Solitaire he played

Q: which of the following statements is not part of Dalton's original atomic theory?  all atoms of one…

A: According to Dalton's atomic theory, Atoms are indivisible. i.e. there is no subatomic particles…

Q: Describe the ideas of the Ancient Greeks on the atom and elements;

A: According to Q&A guidelines of Bartleby, we are supposed to answer only the first question out…

Q: The mass of 6 million molecules of a diatomic gas is 5.1  × 10-19 kg. What is the atomic mass of the…

A: Mole concept: The number of molecules or atoms present in the one mole of the substance is equal to…

Q: What THREE elements are rare-earth elements? calcium neodymium rhenium niobium samarium thallium…

A: In the above question the elements which are rare earth metal  among the option provided are…

Q: Which elements are alkaline earth metals?(a) rubidium(b) tungsten(c) magnesium(d) cesium(e)…

A: Alkaline earth metals are the elements present in the group 2 of the periodic table. Their general…

Q: What do these four elements have in common? Hydrogen (H) be Oxygen (0) 4e 2e Carbon (C) Na 2e 1e Be…

A: We are given structures of 4 elements we need to describe which thing is common to all.  In an atom…

Q: 8. Which pair of elements do you expect to be most similar in their chemical properties? a) K and Fe…

A: Most similar in their chemical properties

Q: Give one example (atomic symbol and name) for each of the following. a. a main-group…

A: Hi, since you have posted multiple questions. As per our guidelines, we will answer the very first…

Q: Only two isotopes of copper occur naturally, Cu (atomic mass = 62.9296 amu; abundance 69.17%) and Cu…

A: Given,First isotope:Copper atomic mass = 62.9296amu.Abundance = 69.17% = 0.6917.Second…

Q: To what group number does each element belong?(a) germanium(b) nitrogen(c) sulfur(d) carbon(e) boron

A: An atom is the basic and fundamental unit of matter. An atom consists of electrons and the nucleus…

Q: Explain the role of atomic number in determining the identity of an atom.

A: Atomic number(Z) is may be defined as the number of protons present in a neutral(uncharged) atom,…

Q: Four elements are named for planets in our solar system (including the ex-planet Pluto). Give their…

A: Since you have posted multiple questions, we are entitled to answer the first 3 only.

Q: What is the average atomic mass of titanium? Isotope Abundance Mass (u) 46Tİ 72.600% 45.95263 48Ti…

A: Isotopes are atoms of same atomic number but different mass number.

Q: Part A:    Based on the amount of electrons gained/lost, label the charge of the ions from each…

A: The sequential arrangement of elements by using their chemical symbol in horizontal rows and the…

Q: Only two isotopes of copper occur naturally, 63Cu (atomic mass = 62.9296 amu; abundance 69.17%) and…

A: It is given that :Atomic mass of 63 Cu = 62.9296 amuNatural abundance of 63 Cu = 69.17 %Atomic mass…

Q: When trying to identify an unknown element, a scientist determines what other elements the unknown…

A: To identify the unknown elements, its chemical properties should be studied.  Chemical properties…

Q: Fill in the blanks: (a) The symbol and atomic number of the heaviest alkaline earth metal are ______…

A: Note: Since you have posted a question with multiple subparts, we will solve the first three…

Q: The periodic table is an organization of elements based on recurring properties and their atomic…

A: periodic table is an origination of elements based on their Atomic number not on atomic mass.

Q: Which statement is NOT a part of Dalton's atomic theory? The atoms of each element are unique.…

A: we know dalton's atomic theory According to dalton's theory, all matter, the element or compound and…

Q: Mendeleev used chemical reactivity to determine how to organize the elements of the periodic table…

A: Mendeleev's Periodic table was arranged based on the atomic masses of the element, a group of…

Q: Potassium occurs naturally as two isotopes. The heavier isotope has percentage abundance of 93.1.…

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Q: This group of elements is the most reactive of all the non-metals  A) rare earths B) halogens C)…

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Q: A robot spacecraft returned samples from the planetesimal 98765 ALEKS, located in the outer Solar…

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Q: An element exist as 3 isotopes in nature. The isotopic masses (in amu) and percent abundance’s are…

A: The average atomic mass of element is equal to the product of the masses of the isotope and its…

Q: Which element is in Period 2 group 4A? Which element is in Period 4 group 2A

A: In modern periodic table there are 7 horizontal rows which are called periods There are 18 vertical…

Q: A. TRUE OR FALSE. Write T before each number if the statement is correct statement is incorrect. anu…

A: Note : As per our guidelines ,we are supposed to answer only first question (Section A) ,Kindly…

Q: He arranged elements into increasing atomic numbers and found that there is a periodic repetition of…

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Q: 5) Elements in the last column of the periodic table are called, 6) What distinguishes one element…

A: 5. Elements in the last column of the periodic are called Noble gases 6. The atoms of the element .…

Q: What is used as basis for the better arrangement of elements in the periodic table and the key to…

A: Basis for the better arrangement of elements in the periodic table and the key to the discovery of…

Q: Classify each of the following fourth-row elements as an alkali metal, an alkaline earth metal, a…

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Q: Which two elements on the periodic table are in the same period? OH, Na O B, Ga OK, Sc He, Ne

A: Which two elements on the periodic table are in the same period = ?

Q: Which of the following statements is correct about the periodic law? *       A. Properties of…

A: Which of the following statements is correct about the periodic law?

Q: A robot spacecraft returned samples from the planetesimal 98765 ALEKS, located in the outer Solar…

A: The data given is,

Q: On another planet, the isotopes of titanium have the given natural abundances. Isotope Abundance…

A: Given: The natural abundance and atomic masses of the three isotopes of titanium: We have to…

Q: The element X has three naturally occurring isotopes. The isotopic masses (amu) and % abundances of…

A: Atomic species that have the same atomic number but different mass numbers are called isotopes.  An…

Q: Element X has two naturally occurring isotopes, 65X (isotopic mass 65.3520 amu, abundance 58.16%)…

A: The average atomic mass is the sum of the mass of the isotopes multiplied by its fraction or…

Q: Potassium occurs naturally as two isotopes. The heavier isotope has percentage abundance of 93.1.…

A:

Q: Which pair of elements do you expect to be most similar in their chemical properties?a) K and Fe…

A: Most similar in their chemical properties

Q: What is the formula of the compound in which the atom combining ratios are: phosphorus : nitrogen :…

A: In the given molecule three types of atoms are present, phosphorus, nitrogen, and bromine. The…

Q: The most important event that first occurred in the development of our current Periodic Table was:…

A: Periodic table is systematic arrangements of element in tabulated form on the basis of their atomic…

Q: The synthetic radioactive element gallium is used in many medical studies. Give the number of…

A: Gallium-67 has 31 electrons, 31 protons and 36 neutrons.

Q: Table 1: Properties of Zinc and Sulphur Element Zinc Sulphur Number of moles, mole 0.365 Mass, g…

A: Given that,  Element Zinc Sulfur Number of moles, mole 0.365   Mass, g   23.3 16.3 Number…

Q: On another planet, the isotopes of titanium have the given natural abundances. Isotope Abundance…

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Q: Hydrogen sulfide is a gas with the odor of rotten eggs. The gas can sometimes be detected in…

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Q: 1.)What is the atomic number for the element that is in group 1A and period 6? 2.) What is the…

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Q: An element has the following natural abundances and isotopic masses: 69.17% abundance with 62.93 amu…

A: Several elements in nature are present in different isotopic forms. So their atomic masses are…

Q: The relative atomic masses of elements are seldom whole numbers because A. atoms of some elements…

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Q: When asked to fill out the box diagram for an atom or ion, students gave various incorrect answers.…

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Group 14 Elements

The following elements come under group 14 of the periodic table.