Distinguish between Democritus’s ideas and Dalton’s atomic theory.

Q: What is distinctive about isotopes of elements, and why are they important?

A: The atomic number of an element is expressed as the number of protons and it is equal to the number…

Q: Define isotope

A: Define isotope

Q: Which subatomic particle was discovered by researchers working with cathode-ray tubes?

A: Cathode ray tube experiment Cathode ray tubes are sealed glass tubes are sealed glass tubes that are…

Q: Describe the properties of protons,neutrons, and electrons.

A: An atom is made up of subatomic particles like proton, neutron and electron. Electron is present in…

Q: Which of the following scientists did not contributeto determining the structure of the atom?(a)…

A: To find: The scientists did not contribute to determining the structure of the atom

Q: Classify the following elements as a metal, nonmetal, and a metalloid. 1.) hydrogen…

A: Metal is the element that readily forms cations and shows properties like conductivity, luster,…

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: What are the physical and chemical properties of subatomic particles? (please provide many answers)

A: Answer -  Subatomic particles - subatomic particles are smaller than atoms. They can be composite…

Q: Differentiate between different isotopes of an element?

A: A number of atoms of some elements have been identified, which have the same atomic number but…

Q: Distinguish among the types, locations, and charges of subatomic particles.

A: Protons, neutrons are electrons  that are the three fundamental subatomic particles present in the…

Q: the sodium isotope with 10 neutrons

A: The atomic number of an atom is the number of protons present in the atom. For a neutral atom, the…

Q: Compare the properties of the following: α particles, cathode rays, protons, neutrons, and…

A: Protons: They are positively charged particles present in the nucleus of an atom. Electrons: They…

Q: The fundamental particle of matter is the A) proton B) electron C) neutron D) atom E) None of the…

A:

Q: How do isotopes of a given element differ? How are they similar?

A: In the question, it is asked about the isotopes that what are isotopes and in what manner they are…

Q: Sulfur has four isotopes and has an atomic mass of 32.066 amu. The four isotopes have the following…

A: "Since you have asked multiple questions, we will solve the first question for you. If you want any…

Q: Which subatomic particle(s) are found in the nucleus of the atom? Enter the subatomic particle or…

A: To find : Which subatomic particles are found in the nucleus of the atom.

Q: What is the mass number of an atom that contains a. 42 protons, 42 electrons, and 53 neutrons? b. 24…

A: a. 42 protons, 42 electrons, and 53 neutrons? b. 24 protons, 24 electrons, and 28 neutrons? To find…

Q: Which of the three subatomic particles was discovered first—the proton, neutron, or electron? Which…

A: All matter is composed of atoms and atoms are made up of three subatomic particles- protons,…

Q: Why was it more difficult to discover neutrons than protons or electrons?

A: Neutrons was discovered by James Chadwick in 1932, after the discovery of electrons and protons.

Q: which of three subatomic particle was discovered first - the proton, neutron or electron?

A: The subatomic particle out of the three that was discovered first is to be identified- the proton,…

Q: Rutherford’s Metal Foil experiment demonstrated __. A) that most of the mass of an atom is in its…

A: Answer:- This question is answered by using the simple concept of Rutherford metal foil experiment…

Q: Rutherford bombarded a gold foil with alpha particles. Describe what he observed and what did his…

A: Rutherford bombarded a gold foil with alpha particles which are positively charged particles and…

Q: The isotope lithium-7 has a mass of 7.0160 atomic mass units, and the isotope lithium-6 has a mass…

A:

Q: Which statements are consistent with Rutherford’s nuclear theory as it was originally stated? Why?a.…

A: Rutherford's atomic model also named as "nuclear model". As per Rutherford's nuclear theory, any…

Q: How are protons and neutrons similar? How are they different?

A: Similarities: Protons and neutrons have almost the same mass and are both located in the nucleus of…

Q: Indicate the isotope having 12 protons, 11 neutrons and 12 electrons.

A: We have to predict the element symbol.

Q: From the results of his gold foil experiment, Rutherford concluded that   Group of answer choices A.…

A: From the results of his gold foil experiment, Rutherford concluded that atoms are composed of a…

Q: Rutherford's gold foil experiment determined that A) neutrons are in the nucleus. B) electrons have…

A: Rutherford bombarded the alpha particles on the very small sheet of gold. He observed that most of…

Q: what are the Similarities of atomic mass and atomic numbers?

A: Atomic mass is associated with the number of neutrons and protons that are present in a particular…

Q: The total mass of 12 protons, 27 neutrons, and 24 electrons

A: Given that, no. of proton = 12 no. of neutron = 27 no. of electron = 24

Q: Which scientist developed the "plum pudding" model of the atom? Spherical cloud ´of positive charge…

A: J.J. Thomson's experiments with cathode ray tubes showed that all atoms contain tiny negatively…

Q: Which idea came out of Rutherford’s gold foil experiment?a) Atoms contain protons and neutrons.b)…

A: Rutherford’s gold foil experiment is also called as Planetary model of the atom in which he told…

Q: Which subatomic particles have a negative charge?

A: A typical atom consists of three subatomic particles: protons, neutrons, and electrons. Protons and…

Q: Design a concept map that compares and contrasts the atomic ideas proposed by Democritus and John…

A: These are different atomic theories and in next step two are explained. Ancient Greek Beliefs.…

Q: A selection of the most prominent individuals mentioned in this topic is given below. Match Column A…

A: In one column , there is different names of Scientists.  On the other column, there is some of the…

Q: Create a timeline for the development of atomic theories from before the common era until the…

A: The extremely smallest particle of matter which cannot be further broken down to even smaller…

Q: Who was credited for the discovery of the Periodic Law that led to the modern Periodic Table? A)…

A: The periodic table is a display of chemical elements. It is also called as periodic table of…

Q: Discovering which of the three subatomic particles proved to be the most difficult—the proton,…

A: From three subatomic particle - the proton, neutron and electrons : Answer :            The NEUTRON…

Q: Which statement about subatomic particles are false? Some atoms don’t have any protons.

A: All atoms have protons.  Every atom has fixed number of number of protons.

Q: An isotope has a mass number of 13 and an atomic number of 6. How many neutrons does this isotope…

A: Number of neutrons =  Mass number - Atomic Number

Q: What is modern Atomic Theory?

A: Given term, Modern atomic theory Atom - a fundamental particle of matter (i.e. anything that can be…

Q: An isotope that contains 4 protons, 4 electrons, and 6 neutrons.

A: Atomic number (Z) is equal to number of protons Mass number (A) is the sum of number of protons and…

Q: All atoms of a given element have the same A) density B) number of neutrons c) mass D) number of…

A: Each element has a unique atomic number

Q: an oxygen atom with 10 neutrons

A: An oxygen element is a non-flammable element and exist in various isotopes. For the same element,…

Q: 32. An atom contains 27 neutrons and 23 electrons. What element is this atom?

A:

Q: Summarize the history of the atomic idea. How was Dalton able to convince others to accept an idea…

A:

Q: 14. Which of the following scientists discovered the electron? A. Democritus B. Dalton C. Thomson D.…

A: Electron is a subatomic particle having a negative charge which is found in all the atoms.  The…

Group 14 Elements

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