Neutron was discovered by *

Q: 1. A scientist collects data on a sample of Lithium. He determines that 92.3% of the sample is…

A: The atomic mass of lithium = 6.938923 amu

Q: 1. Which scientist first discovered electrons? a. Bohr b. Chadwick c. Dalton d. Democritus e.…

A: Subatomic particlesscientistsyearProton (positively charged particle)Ernest Rutherford1911Neutron…

Q: 1. Which of the following substances is an element? А. Ice В. Coal С. Sand D. Iron 2. Which of the…

A: The structure of an atom, as studied by scientist such as J. J. Thomson, Ernest Rutherford and Neils…

Q: Which pair represents a set of isotopes? O A. calcium-48 and titanium-48 O B. 74se and 82se O C.…

A: Isotopes : Isotopes are the atoms of same  element with same atomic number but different number of…

Q: Which best describes isotopes? A. Same number of neutrons, different number of electrons B. Same…

A: atoms of the same element have the same number of protons, but some may have different numbers of…

Q: D. Isotopes and Atomic iMass Reading list 1 Nuclear Symbol Protons Neutrons Electrons 107 47Ag Ag…

A:

Q: is not used to make Portland Cement a Calcareous Rocks b. Argillaceous Rocks c. Siliceous d. Sands…

A: 1.  B option is correct. CO2 Carbon dioxide is emitted as a by-product of clinker production, an…

Q: 12. For each of the following elements, use the tables on the inside cover of the book to give the…

A: An atom is made up of a nucleus and electrons. Nucleus consists protons and neutrons. Protons are…

Q: Determine the number of protons and electrons in each ion  I¹- A.53 protons, 52 electrons B.53…

A: Given ion is  (iodide ion ) Anion is formed by gain of electrons  Atomic number of iodine is 53…

Q: What makes up most of the volume of an atom?A. protonsB. neutronsC. electronsD. empty space

A: The smallest particle of an element is called an atom. Atoms of different elements are of different…

Q: There are electrons and +2 neutrons in the ion of Cd Atomic number: 48 Mass number : 112 O A. 46, 48…

A: Given ion,    Cd2+ ion    Mass number = 112    Atomic number = 48

Q: 1.Which of the following elements is not an alkali metal? a. Li b. Na c. K d. P

A: Note : As per our guidelines , we are supposed to answer first question please resubmit the other…

Q: How many protons (p), neutrons (n), and electrons (e) are in one atom of  23  12   Mg  ? (*23 is the…

A: Mg is an Alkaline Earth Metal (Group 2) element. Atomic No. of Mg = 12 Mass No. of Mg = 23

Q: How many of each subatomic particle does an atom of lead-208 have?

A: Subatomic particles are also known as elementary particles. The main three subatomic particles are…

Q: 21. What force holds electrons near the nucleus of the atom? A. Strong nuclear force B.…

A: From the concept of periodic trends of elements and atomic mass of elements the following questions…

Q: Which statements are inconsistent with Rutherford’s nucleartheory as it was originally stated?…

A: Given statements, a. Since electrons are smaller than protons, and since a hydrogen atom contains…

Q: 15. How many subatomic particles are there in C-14  A. 6 B. 8 C. 14 D. 20

A: There are three subatomic particles present in any atom or element- protons, neutrons and electrons.…

Q: Magnesium has an atomic number of 12. Which of the following statements is true of a neutral…

A: Correct answer is (a.) It has 12 protons, 12 electrons, and 12 neutrons. Atomic number (Z) = number…

Q: 16. Give complete symbols of each atom, including the atomic number and the mass number. a. a…

A: An atom has nucleus. Protons and neutrons are present in nucleus. Electron revolve around the…

Q: Calculate the charge of an ion that contains 32 protons, 32 neutrons, and 30 electrons. OA. -2 B. 0…

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

Q: . Dalton's Atomic Theory included all of the ideas listed below except   a. All atoms of a given…

A: Ans-32  The postulate that does not give my dalton atomic theory is - An atom is composed of very…

Q: Isotopes have the same number of a. Protons; electrons Ob. Neutrons; protons c. Electrons, protons…

A: Isotopes are two or more forms of same element which consist of equal numbers of protons but…

Q: 1. The atomic number of lithium is 3. How many neutrons does an atom of lithium have if it is…

A: Element is represented by symbol AX Where A = mass number

Q: 18 13 14 15 16 17 He Li Be B. Ne No Mg Al Si P. K Ca Ga Ge As Se Br CI Ar K Kr

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

Q: Bromine has two naturally occurring isotopes. Bromine-79 has a mass of 78.9183 amu and an abundance…

A:

Q: Which one of the following statements about atoms and subatomic particles is correct? OA. The…

A:

Q: Please help me with questions 1 and 2 1. What is an example of matter? A. Light B. None of the…

A:

Q: xcept: s cannot be created or destroyed. lement is composed of very small particles d protons,…

A: Dalton's atomic theory includes: 1. Atoms cannot be created or destroyed 2. All atoms of a given…

Q: MCQ 1: The smallest particle of an element which can take part in any chemical change is known as…

A: In any chemical reaction or chemical change atoms participate in a chemical reaction.  Since nucleus…

Q: 5. Which elements are halogen elements? A. Fluorine, Chlorine, Bromine B. Calcium, Strontium, Barium…

A: We would use periodic table properties to answer these questions.    Note : As you have uploaded…

Q: Consider the following data for the element Z. Determine the number of b) protons, c)electrons and…

A: Given : There are total 3 isotopes of element Z. Number of protons in isotope 1 = 16  And mass of…

Q: Calculate the number of protons, neutrons, and electrons in: a. Ba b. Po C. £Cd Calculate the number…

A:

Q: 30. How many protons are there in Po-209? a. 84 b. 125 С. 123 d. 209 31. How many protons are there…

A: * Mass number of element =  Number of protons + Number of neutrons * Atomic number = number of…

Q: Write atomic symbols for the following isotopes а. С-13 b. N-14 с. Pb-207 d. Cl-35 e. U-238 f. Cu-65

A: Atomic symbol is represented as                  zXA Where z= Atomic number  A= Mass number  And X=…

Q: 5. Fill in the following table (the first line is competed as an example) Ion Number of Protons…

A:

Q: 4. Who discovered the neutron in 1932? A. Democritus C. Ernest Rutherford B. James Chadwick D.…

A: Mass number Mass number gives the number of protons and neutrons in an atom.

Q: Based on the information gathered from the periodic table seen in Figure 2-H, Magnesium will most…

A: 1) magnesium has an atomic number of 12 which means that it has 12 electrons and 2 electrons in the…

Q: 22. Elements that have metallic and non-metallic properties are called a. metalloids…

A: The question is asking to identify the term for elements that exhibit both metallic and non-metallic…

Q: 2. Which of the following best describes an element? a. A neutral substance consisting of a cation…

A: Element is a substance which consists only of atoms having same atomic number and hence same…

Q: How many protons, neutrons, and electrons are in one atom of Zn ? O A. 30 protons, 40 neutrons and…

A: Answer option A. 30 protons, 40 neutrons and 30 electrons.

Q: Atomic Theory & Scientists 1. Write the letter of each sentence that is true about Dalton's atomic…

A: Dalton's Atomic theory : John Dalton in 1818 put forward a theory on atomic structure based on his…

Q: Which is statement is true about the neutrons of atom?

A: Neutrons are the neutral subatomic part of atoms. Nucleus have equal number of neutrons and protons.…

Q: Use the information below to answer questions 34 and 35. Elements Subatomic Na Ca Ar Particles…

A: Number of prorton gives the atomic number  Sum of number of proton and neutron gives atomic mass.

Q: 5. Complete the following table of neutral atoms of isotopes. Nuclear Symbol 90 39Sr 104 154 Atomic…

A: atomic number = proton numberfor neutral atoms, proton number = atomic number = electron numbermass…

Q: 7. For the following elements, give their name and their atornic number Name Atomic Number a. F b.…

A: Hi, as you have posted multiple questions and have not mentioned which question you want us to solve…

Q: C. 21. For any ion, the number of electrons is always more than the number of protons. d. Not enough…

A: We have to predict the correct options for given atoms .

Q: Which equation is true of an atom with no electrical charge? O A. Number of electrons = number of…

A: Here given options regarding an atoms.we are asked which is true for an atom with no electrical…

Q: 36. Why are atoms electrically neutral? * a. They have the same number of protons and neutrons which…

A: Concept:  Atomic structure: Atoms consist of three basic particles: 1. protons 2. electrons 3.…

Writing and Balancing Nuclear Equations

A nuclear equation is a symbolic representation of a nuclear reaction using certain symbols. It is studied in nuclear chemistry and nuclear physics.