2. Look at the Periodic Table and answer these questions. a. Do nonmetals form anions or cations? b. Do metals form anions or cations? c. What is the charge for all of the elements in Group 1?

Q: The explosion of an atomic bomb releases many radioactive isotopes, including strontium-90.…

A: The position of the element strontium in the periodic table is marked in the diagram of the periodic…

Q: a.What is the charge on Rb? b.What is the charge on Ca? c.What is the charge on Sr?

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

Q: Are ions, atoms, and molcules the same thing?

A: Atoms: It is a smallest constituent unit of ordinary matter which constitutes a chemical element. It…

Q: did john dalton give us the "raisin bun" model of the atom where negative and positive charges are…

A:

Q: Page 1| 16 What's New Directions: Explain the existence of various types of chemical formulas and…

A: There are various types of chemical formula exist in molecule. Each chemical formula shows different…

Q: Describe and illustrate Dalton's Model, Thompson's Model, and Bhor's model of the atom.

A: Thompson's Model: J. J. Thomson performed experiments studying cathode rays and discovered that they…

Q: 2. Define these terms and explain why these names are used for of elements: a. Family

A: Element  are  the pure substance consisting only of atoms  and  elements cannot  be broken down into…

Q: Why has the atomic model changed over time?

A: Atomic model are the model proposed by eminent scientist to explain the structure of the atom and…

Q: Name the alkaline earth metal with 81 neutrons and 56 electrons.

A: Barium atomic number = 56 Calcium atomic number = 20 Strontium atomic number = 38 Radium atomic…

Q: What are the ions involved in these elements?

A: A. HgSO4 = Hg^2+ + SO4^2-  So, in HgSO4 the ions involved are : Hg^2+ and SO4^2-.  B. Ca(OH)2 =…

Q: 9. What 9. What is the difference between a molecular element and an atomic element? List the…

A: Element is a substance which cannot be broken down into simpler unit.It is purest form any…

Q: Use an example to explain why we say that an atom is thesmallest unit of a substance

A: Atom It is smallest particle unit of matter that retains all chemical properties of the element. It…

Q: Which of Dalton’s postulates about atoms are inconsistent with later observations? Do these…

A: In 1808 John Dalton has provided the first atomic theory. He has stated that all matter is made up…

Q: Is the statement inconsistent with Dalton’s atomic theory as it was originally stated? Why? Two…

A:

Q: What are allotropes? Give an example. How are allotropesdifferent from isotopes?

A: Given term,        Allotropes and isotopes

Q: Is it possible for 2 Carbon atoms to have different mass numbers? How?

A: Yes, it is possible for 2 Carbon atoms to have different mass numbers.

Q: When a piece of cadmium (Cd) is placed a solution of nickel chloride (NICI2), the following reaction…

A: Hey, since there are multiple subparts posted, we will answer first eight subparts. If you want any…

Q: Is the statement inconsistent with Dalton’s atomic theory as it was originally stated? Why? The…

A: Yes,the statement that formation of a compound often involves the destruction of of one or more…

Q: What do you mean by Atoms? Define the Periodic Table ?

A: There were different beliefs about the nature of matter: In the 6th Century B.C. in India, an Indian…

Q: 19. Name or Write the following compounds: a) Dinitrogen hexafluoride = b) Lead (IV) oxide c) NaMno,…

A: a.) From the name it is clear that the compound contain 2 nitrogen(di) and six fluorine(hexa) atoms.…

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: Coulomb's Law is a mathematical representation of the electric force between two objects. When…

A: Coulomb's law formula is used to find the electrostatic force of attraction between two charged…

Q: Why was argon used in light bulbs?  Need periodic table for this answer.

A: Argon is noble gases found in the group (18) do not react with any metal; it means it creates an…

Q: 22. As in question 21 determine the mass % of N (nitrogen atoms) in ammonia (NH3), urea (CHẠN2O) and…

A: Mass percent is the mass of the element divided by the mass of the compound or solute.

Q: The radius of a hydrogen atom is 37 pm (1pm 10-12m). How many hydrogen atoms lined up side to side…

A: Given,Radius of hydrogen atom = 37 pmDiameter of hydrogen atom = 2 × radius = 2 × 37 pm = 74 pm…

Q: a certain compound is made up of 2 chlorine atoms, one carbon atom, and one oxygen atom. What is the…

A: A chemical formula is defined as the composition of elements present in the compound in a fixed…

Q: Using  Periodic Table give four pieces of information which we have about cadmium? (What do we know…

A:

Q: Why chemists use models to study atoms?

A: An atom is composed of three component particles which are electrons, protons and neutrons.  The…

Q: Which of Dalton’s postulates about atoms are inconsistentwith later observations? Do these…

A:

Q: How many π electrons does C contain?

A: The given compound is,

Q: What did Rutherford conclude about the atom that would explain the unexpected result explain

A: Rutherford performed the α-particle scattering experiment and observed that most of the α- particles…

Q: Explain and give an example on repulsion between the protons; repulsion between the electrons;and…

A:

Q: What is the charge on a hypothetical ion with 45 protons and 47 electrons?

A: Every atom has equal number of electrons and protons . Therefore they are neutral. Every extra…

Q: a. What is the charge on ions formed from the alkaline earth metals?  b.What is the charge on ions…

A: The elements in the periodic table are arranged in increasing order of their atomic number. There…

Q: What is electrostatic force? Use your understanding of electrostatic force and how the number of…

A: We have to explain electrostatic force and its impact on atomic size.

Q: Describe the structure of an atom. What are atoms composed of and how are the individual parts of an…

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

Q: What are the charge and mass of?:  a)  a singly ionized sodium atom, Na2+ (??????: 2311??, ????=…

A:

Q: 1. What is a rule for making a neutral atom which has no charge? 2. What is a rule for making a…

A:

Q: How can charges in atoms and molecules be separated?

A: Applying concept of polarisation of molecules due to charge separation.

Q: 4) Where would you expect to find a stored bottle of H,So, in the laboratory? A) in the storage…

A: Acids are the chemicals that gave H+ ions in a solution/reaction. Bases are the chemicals that gave…

Q: Part A:  Pairs of ions are attracted to each other to build an ionic ________ Your answer   Part B:…

A: Ionic compound is formed by attraction of appositely charged ion.

Q: polyatomic ions?

A:

Q: The average mass of a carbon atom is 12.011.  Assuming you were able to pick up only one carbon atom…

A: The average mass of a carbon atom is 12.011. There are three isotopes of carbon. C-12, C-13, and…

Q: What are the most common charges for magnesium and oxygen?  What would you expect the ratio between…

A: When electrons added to an atom it gets negative charge and when electrons are removed from an atom…

Q: What elements can form an anion?

A: Element is a pure substance consisting of same kind of atoms and have the same number of electrons…

Q: 31. How many atoms of hydrogen are in ONE molecule of (NH4)2S04? А. 4 В. С. 6. D. 1 Е. 8

A: The given compound is ammonium sulphate. (NH4)2SO4

Q: Of the remaining two subatomic particles, which do you place second in importance for forming…

A: This question concerns the work done by J.J Thomson. Thomson thought that the electrons are the most…

Q: A certain compound is made up of one phosphorus (P) atom, three bromine (Br) atoms, and one oxygen…

A: The given compound contains one phosphorus atom, three chloride atoms and one oxygen atom. The…

Atoms and Molecules

An atom is the smallest unit of an element that possesses all the properties of that particular element. Molecules are the smallest unit of a substance that possess all the properties of that particular substance.