a sample of the element boron with have some atoms with six neutrons and some atoms with 5 neutrons; collectively, these atoms are called   a. Cations b. anions c. isotopes d. ions

Q: g. What is the atomic number for potassium? h. What is the atomic mass for potassium? i. How is the…

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Q: a) Describe an atom using the Bohr model and wave mechanics model. b) What are the differences…

A: ATOMIC MODEL THEORIES The following are the atomic model theory's postulates:Atoms are the building…

Q: Where are electrons, protons, and neutrons located withinan atom?

A: The smallest unit of matter is an atom that gives the formation of the chemical element. The meaning…

Q: Selenium-80 is a naturally occurring isotope used in overthe-counter supplements.a. How many protons…

A: An atom is mainly composed of three sub-particles; electrons, protons and neutrons. These particles…

Q: Describe Rutherford’s planetary model of the atom.

A: Rutherford model or Rutherford atomic model or nuclear atom, or the planetary model of atom gives…

Q: How the number of electrons “owned” by an atom is determined ?

A: The number of electrons owned by an atom is determined by calculating the number of bonds and number…

Q: 1. A carbon atom with 7 neutrons, and a positive charge. 2. A nitrogen atom with 7 neutrons, 8…

A: Given We know about the number of protone ,nutron  and charge

Q: How many 7s electrons are in Ra?

A: The number of 7s electrons are in Ra has to be given,

Q: The number of protons (is, is not) always equal to thenumber of electrons in orbit around the…

A: The symbol of an element is defined as  ZXA Where  A = mass number = Z + N              Z  = Atomic…

Q: On a sheet of paper, Illustrate the history of the atom. Indicate the scientist's name, the Time…

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Q: Protons and neutrons are found in the (a, surrounded by nearly empty space where (b) are located.…

A: Hello. Since your question has multiple parts, we will solve the first question for you. If you want…

Q: Changing the number of electrons in an atom changes the atom’s..

A: Atomic Charge

Q: When an atom gives up an electron and acquires a positive charge, it is called a/ an  _____________.

A: Every atom contains valance electrons in its outer shell. When an atom looses and electron from its…

Q: Describe the early Greeks' idea of the atom?

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Q: In atoms, protons and neutrons are found (a) only in the nucleus. (b) outside the nucleus. (c)…

A: An atom is composed of three main sub atomic particles; electrons, protons and neutrons. Out of…

Q: + а. Bohr b. Dalton C. Rutherford d. Thomson 3. Which atomic model was the first to show a nucleus,…

A: 27) in the Given figure, the model of an atom was proposed by Thomson.

Q: An atom of an element contains 66 electrons. Which element is it?

A: The periodic table is the arrangement of elements in the order of increasing atomic number. The…

Q: An atom has a mass number of 30 and 16 neutrons. What is the atomic number of this aton Express your…

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Q: An element has nine protons and 10 neutrons in the neutral atom. (a) How many electrons are present…

A: Given: Number of protons= 9 Number of neutrons = 10 To find: The number of electrons Atomic number…

Q: What most likely explains why the chemical symbol for calcium is? A. The symbol was already used for…

A: Calcium is discovered by Humphry Davy in 1808. It belongs to group 2 of the periodic table with an…

Q: I с со I [References] VII Available Electrons: 16

A: Here we have to follow the basuc rule of Lewis dot structure and proceed according to that .

Q: a. Explain how atoms of different elements differ from one another.b. Explain how atoms of different…

A: a).

Q: Which elements are most likely to have properties that are similar to the properties of F?

A: Br and Cl have the similar properties like Fluorine. Because F is the member of 17 group in the…

Q: "the atom with 38 protons and 49 neutrons"

A: Given,        Number of protons = 38         Number of neutrons = 49  Assume an atom is 'X'

Q: the major portion of an atom's mass consist of

A: Atom Consists generally basic three particle-1. Electron,2.Proton 3. Neutron. there are two part-…

Q: Why is the number of electrons not part of the mass number of an atom?

A: The reason for the number of electrons not part of the mass number of an atom  has to be given.

Q: 10. How are elements organized on he Periodic Table of Elements? A increasing atomic mass B…

A: The periodic table (the modern one) is framed based on the modern periodic law which state that the…

Q: Why did J.J. Thompson experiments with cathode ray tubes imply about the mass of an electron…

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Q: Explain why the atomic mass of an element is an average mass

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Q: In the simulation, what was the maximum number of electrons that could be put on the orbit farthest…

A: 18 electron  The M shell can be put 18 electron as we move to higher atomic number

Q: 24.1% of all isotopes of an element have a mass of 75.23 amu. 48.7% have a mass of 74.61 amu and…

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Q: A. Atomic number of Terbium B. Mass number of Carbon C. Element with atomic number 113

A: Given, A. Atomic number of Terbium = ? B. Mass number of Carbon = ? C. Element with atomic number…

Q: 25. Which determines the speed of a molecule? * a. Its kinetic energy b. The amount of the molecules…

A: Multiple choice questions : 25-28

Q: what is the mass of an electron?

A: Electron, lightest stable elementary particle known.

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 scientist developed a model that is still used today to show the number of electrons in each…

A: Bohr model explains an atom as a small and positively charged nucleus surrounded by electrons. These…

Q: Part C An atom has a mass number of 27 and 14 neutrons. What is the atomic number of this atom?…

A: Mass number & Number of neutrons are given.

Q: Find the iostope data for 14/7 N Include the datat for the atomic number, Mass Number, Protons,…

A: Atomic number is equal to no of proton and no of electron…

Q: When was the first theory about the character of the atom developed? O a. some 100 years ago O b.…

A: Atomic theory is a scientific theory of the nature of matter, which states that matter is composed…

Q: Draw a diagram of Rutherford's experiment and describe it. Include a full description of how the…

A: Rutherford uses a gold thin foil and alpha-particles and because of that this model is also known as…

Q: How is the protons, neutrons, and elctrons calculated for chemical Elements. And it the protons and…

A: -> proton + neutron = atomic mass  -> number of proton = atomic number (Always) -> number…

Q: proposed

A: Democritus theory is Ancient theory, He say about that matter consists of atom means smallest…

Q: What are the two regions of an atom?

A: The two regions of an atom has to be given.

Q: Why Rutherford’s model could not explain the stability of an atom?

A: Models for electrons- J.Thomson in 1897 discovered electron with the help of cathode ray tube…

Q: Describe the motion of the particles from A to B

A: The Time-Temperature graph has temperature on the vertical Y-axis and time on the horizontal X-axis.…

Q: d. A sample of potassium atoms is made up of 54% 39K and 46% 41K. Use this information to find the…

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Q: According to the bohr model, an atom with 7 electrons has how many PAIRS of electrons? Type your…

A: An atom consists of protons, neutrons, and electrons sub atomic particles. Among those particles,…