Answer the question below. Use the rubric in the materials for help if needed. Use details to support your ideas.  Dmitri Mendeleev left gaps or holes in his model of the periodic table. What did these gaps represent?

Q: Assuming that the shape of atoms is spherical, what is the diameter (in angstroms) of an atom that…

A: A multiple choice question based on atomic structure, which is to be accomplished.

Q: When 6.00 g of sulfur are combined with 6.00 g of oxygen, 12.00 g of sulfur dioxide (SO2) are…

A: Molecular mass of sulfur = 32 g /mol, means 32 g in 1 mol.Molecular mass of O2 = 32 g / mol, means…

Q: Element X has an unstable nucleus due to an over-abundance of neutrons. Which of the following is…

A: Heavy nuclei are unstable because of their heavy mass and they emit radiations in order to reduce…

Q: Organization of the Periodic Table Read each description in the first column of the table below. If…

A:

Q: Predict the product when the two substances mix. If the reaction occurs, write the balanced chemical…

A: A reaction is called balanced when number of atoms in reactant and product side are equal to each…

Q: How can rare earth elements cause water pollution?

A: In the periodic table, the rare earth elements are the elements present in the lanthanide series of…

Q: Below are some chemical fertilizes, molecular compounds of lonic compounds. What is the atomic…

A: “Since there are multiple sub-parts in this question and it is not mentioned that which one has to…

Q: ving elements in order from lowest boiling point to highest

A: In this question four compounds are given and order of boiling point asked.

Q: Identify 4 patterns and trends in the way the elements are arranged on the periodic table?

A: Patterns and trends in the properties of chemical elements that are revealed in the periodic table…

Q: Read each description in the first column of the table below. If any chemical element with atomic…

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

Q: Classify the substance shown in the sketch below. You can click the other tabs in the sketch to get…

A: Given: The sketch provided shows a substance.  Looking at 1000X, it seems to be hard and a pattern…

Q: Describe why "new" elements (man-made elements) are created, or why do we benefit in creating them?…

A:

Q: 1. Use a periodic table to fill in the first four columns. If it has a specific group name (see…

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

Q: Name this molecule. Red atoms are oxygen. Blue atoms are nitrogen

A: Step 1: We have 5 carbons in the ring. So the it will start with the name 'pent' Step 2: It is a…

Q: Please don't use hend raiting and step by step solutions

A: Number of electron and proton in iron is 26 .So atomic number of iron is 26 .Symbol of iron is 26…

Q: Give the formulas for the following compounds. sodium sulfide sodium nitrate mercury(II) iodide…

A:

Q: Select all the properties that you would expect a nonmetal element to have. ductile Olow melting…

A: Based on some properties elements are classified into three groups 1. Non metals 2. Metals 3.…

Q: The hydroxides formed by three elements of period 3 are given in the following table. Write the…

A: Period 4 elements for group 1A--K, Potassium                                                2A--Ca,…

Q: What is the chemical formula for Copper (I) Sulfide?

A: Chemical formula of an ionic compound can be formed by criss-crossing the valencies of ions.  Cu…

Q: 2. Make a list of some facts in this article that relate to what we have studied so far. What We…

A: 1  As bectrium are able to substitute phosphorus with arsenic it indicates that chemistry of arsenic…

Q: Let's start by finding the location on the periodic table for the atoms for substances that conduct…

A: In general ionic compounds formed between metal and non metal conducts electricity when dissolved in…

Q: Predict the products of the reaction below. That is, complete the right-hand side of the chemical…

A: We have been given an inorganic reaction and we have been asked the products.of given reaction.…

Q: A sample of 5.000 g of nitrogen can be combined with 5.714 g of oxygen to form nitric oxide gas…

A: The amount of products formed for the given quantity of reactants is determined using stoichiometry.…

Q: How could a carbon atom could become a nitrogen atom? Explain and be specific in your explanation

A: Nuclear reaction: The given reaction is a nuclear reaction. In the nuclear reaction, one nuclide is…

Q: Express your answer as an ion. cesium   chlorine   magnesium   nitogen

A: Ion is a chemical specie formed as result of loss or gain of electron by a neutral isolated…

Q: There are 1.699 x 1022 atoms in 1.000 g of chlorine.  Assume that chlorine atoms are spheres of…

A: Number of atoms in 1 g chlorine = 1.699 × 1022 atoms Number of atoms in 0.5 g chlorine = 0.5 × 1.699…

Q: Imagine an alternate reality. The Thomson cathode ray experiments arrived at a charge to mass ratio,…

A: Here, we have to determine mass of electron.

Q: Complete and balance the following equations. Click in the answer box to open the symbol palette. 1…

A:

Q: What is the chemical formula for Titanium (IV) Oxide? Show your steps.

A:

Q: Use the elements and polyatomic ions listed in the box to create BOTH chemical formulas and names…

A: A compound is formed by the electrostatic interaction between the cation and the anion. The cation…

Q: Enter the symbols for the ions of sodium and phosphorus .

A: Sodium is an element which lies in group IA.  Sodium has a charge of +1.  Losing of one electron…

Q: What are the steps in the formation of a potassium ion?

A: Potassium (K) is metal and has an atomic number  19. It has an electronic configuration=…