2.77/The radii of the lithium and magnesium ions are 76 pm and 72 pm, respectively. Which compound has stronger ionic attrac- tions, lithium oxide or magnesium oxide?

Q: The number of atoms in 1 dm3 of aluminum is nearly the same as the number of atoms in 1 dm3 of lead,…

A: Density of a substance is given by the ratio of mass and volume of the substance. Write the…

Q: Give the names and charges of the cation and anion in each of the following compounds: (a) CaO, (b)…

A: a calcium oxide  b sodium sulphate

Q: A metal (M) forms an oxide with the formula MO. If the oxide contains 39.70 % O by mass, what is the…

A: Molar mass of an element is its characteristic property .So to identify the metal, first its molar…

Q: 3. How many protons (P), neutrons (N) and electrons (e) are present in Os² that has mass number 190…

A: Given that  Atomic no of element = 79

Q: In the periodic table below, give the name, symbol, atomic number, atomic mass, period number, and…

A: The periodic table is a table that organizes all of the chemical elements according to their atomic…

Q: The radius of a strontium atom is 215 pm. How many strontium atoms would have to be laid side by…

A: Diameter = 2 X Radius

Q: 2.74 An ionic compound forms when lithium (Z = 3) reacts with oxygen (Z = 8). If a sample of the…

A: Given data contains, Number of lithium ions is 8.4×1021 Li ions. Atomic number of Li is 3. Atomic…

Q: What is the radius (in cm) of a pure copper sphere that contains 1.27*1-^24 copper atoms?  The…

A:

Q: 2 of 2 Explain why the atomic mass of an atom is a decimal number and how that value was determined…

A: In periodic table generally atomic masses are in decimal form because we know that almost for every…

Q: The amount of carbon-14 in ancient artifacts and fossils is often used to establish their age.…

A: Given, the amount of Carbon-14 in ancient artifacts and fossils is often used to establish their…

Q: atoms

A:

Q: Distinguish between ions, cations, and anions

A: A chemical specie like atom or a molecule can either be in neutral state or in charged state. The…

Q: Suppose that one of Millikan’s oil drops has a charge of −4.8×10−19 C.How many excess electrons does…

A: Given,One Millikan’s oil drop has a charge = -4.8 × 10-19 CCharge of an electron = -1.6 × 10-19…

Q: Which of the following images correctly shows a Magnesium with a 2+ charge (Mg2)? Mg Mg Mg Ma D

A:

Q: 2.77 Identify the following as elements or compounds: NH3, N2, Sg, NO, CO, CO,, H2, SO2.

A: Matter is any substance that occupies space and volume. Matter is classified into pure substances…

Q: 8. A 2.00 g sample of FeF2 x H2O is dried in an oven. When the anhydrous salt is removed from the…

A: Given: mass of FeF2.xH2O=2.00 gmass of FeF2(anhydrous)=0.789 gmolar mass of H2O=18 g/molmolar mass…

Q: What is the edge length (in cmcm) of a titanium cube that contains 2.41×10242.41×1024 titanium…

A:

Q: Give 3 examples of minerals that forensic geologists commonly encounter in soil samples. Give the…

A: Soil contains many essential minerals that are used in further technologies. These minerals are…

Q: The diameter of a U.S. dime is 17.9 mm, and the diameter of a silver atom is 2.88 A° . How many…

A: The diameter of a U.S. dime is 17.9 mm = 0.0179  meter  diameter of a silver atom is 2.88 A°  =…

Q: (c) 35 (d) 13 3. In the periodic table, if oxygen were assigned an atomic weight of one, what would…

A: given, atomic weight of O is assumed to be 1

Q: A metal x forms two different chlorides if 12.7g of chloride A and 16.3g of chloride B . contain…

A: To find: A metal x forms two different chlorides if 12.7g of chloride A and 16.3g of chloride B…

Q: What element is “X" give the chemical symbol? а.) X 1s°2s°2p® b.) X²+ 1s°2s°2p°3s°3p®

A: We have to identify  the  element 'X' for the  given two electronic configurations.

Q: A newly discovered element has the name Rougen, has the symbol Rg. Rougen can have the charges of…

A: The solution is as follows :

Q: 3. A. B. C. A chlorine atom has 18 neutrons and an atomic mass of 35. How many protons are in the…

A: In an atom three fundamental particles are present. Positively charged particle proton and neutral…

Q: 2.27 Show, with calculations, how the following data illustrate the law of multiple proportions:…

A: According to law of multiple proportion, when two elements combine with each other to form more than…

Q: an element has 12 protons. what is its symbol?

A:

Q: 10. Fill in the following answers: a. Give the complete symbol for an anion of nitrogen with 8…

A: when electron is removed from gaseous parent atom then cation is formed and when electrons are added…

Q: The smallest unit of charge is −1.6×10−19 C, which is the charge in coulombs of a single electron.…

A: Which one gives a whole number after you divide by -1.6x10^-19C since the electron has the smallest…

Q: 3. The atoms in the previous question are isotopes of each other. Based on this information, list…

A: Given that, Atoms are isotopes of each other. What are the requirements for two atoms to be isotopes…

Q: What are the names of the three subatomic particles? What are their approximate masses in atomic…

A: Subatomic particles are the parts of an atom. They constitute the atom. They play an important role…

Q: Calculate the exact masses of the ions C5H8O1 and C6H12 1, both of which have a nominal mass of 84.…

A: The organic compounds can be identified by various characterisation techniques. For example, NMR,…

Q: Based on the information below, what is the elemental symbol of this ion if it has 26 electrons?

A: A chemical or atomic symbol can be defined as the notation of one or more letters which are used to…

Q: How many protons and neutrons are in 37Cl?

A: The smallest unit of ordinary matter that makes up a chemical element is an atom. Every solid,…

Q: The smallest unit of charge is –1.6 × 10¬19 C, which is the charge in coulombs of a single electron.…

A: In the given question we have to find out the values of possible charge of oil droplets. Here, the…

Q: An unknown metal forms a BCC structure with its side length of 2.884 Å. What is the atomic weight of…

A:

Q: A sample of an ionic compound containing iron and chlorineis analyzed and found to have a molar mass…

A: Given molar mass = 126.8 g/mol The iron and chlorine containing compound Molar mass of Fe = 55.8…

Q: Give the names and charges of the cation and anion in eachof the following compounds: (a) CaO, (b)…

A: “Since you have posted a question with multiple sub-parts, we will solve the first three subparts…

Q: An element's most stable ion forms an ionic compound with bromine, having the formula XBr3. If the…

A: Given: 1) Ionic compound with bromine is=XBr3 2) Mass number of an element is = 225 3) Number of…

Q: How many atoms of each type are represented in 4M93(PO)2? *

A: The molecular formula of the given compound is Mg3(PO4)2 and the number of molecules is four.…

Q: In the periodic table, do the chemical properties change more than through a period or through a…

A: Periodic table is table in which the elements are arranged based on there electronic configurations.…

Q: Which element is represented by the following symbol A. Chromium B. germanium C. barium D. iron

A: The given symbol of element is                       5624X  Here,  Mass number of element = 56…

Matter and Measurement

In the universe, there is matter, energy, and void space. The universe contains energy and void space. The definition of matter can be considered as something which possesses mass and consumes space. Chemistry is that branch of science which deals with the study of matter. Under chemistry, nature, composition, and the changes occurring to matter are discussed.