Question 21 The number of protons in a neutral atom is equal to the of the atom. O mass O atomic weight atomic number O mass number O valence electron number Question 22 Which of these statements about Bohr's model of the atom is incorrect? O Electrons fill lower energy orbits first. O The greater the quantum number the higher the energy of an orbit. O Electrons occupy orbits with certain radii that correspond to discrete energies. O Elements with the same number of electrons in their outer orbit undergo similar chemical reactions. O Electrons in the innermost energy orbit are called valence electrons. Question 23 Which of these is the correct chemical symbol for carbon? O C O Ca O Cb

Q: How many electrons are in the 4th energy level in selenium?

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Q: Complete the following by choosing the correct word. The atomic theory was given by H' and H have…

A: Atomic theory was given by Dalton. Both have different mass number so they are isotopes.

Q: How many electrons are in the outermost shell of a sulfur atom?

A:

Q: What is the term for the series of elements that include Th–Lr?

A: The symbol Th is for the element Thorium The symbol Lr is for the element Lawrencium

Q: Which of the following statements are true according to the Bohr model of the atom? (a) Electrons…

A:

Q: Select the pair of elements which have the same number of electrons?

A: An atom can be designated asMAZwhere     A→symbol of the atom    M→mass number= mumber of…

Q: How many valence electrons are in an atom of chlorine? Express your answer numerically. • View…

A: Valence electrons :- The number of electrons present in outermost shell ( valence shell ) of an atom…

Q: State the maximum number of electrons in L Shell and M Shell.

A: No. of electron in L & M shell =?

Q: List the basic postulates of Dalton’s atomic theory.?

A: The structure of matter is explained by the experimental facts known at the time John Dalton in the…

Q: What makes an atom a positive and a negative ion?

A: Ions are of two types positive and negative ions. Positive ions have a positive charge on them and…

Q: Question 47 Which of the following best describes Quantum Mechanical Model? O The nucleus is orbited…

A:

Q: Draw the Bohr-Rutherford Diagram of Aluminum oxide.

A: Please find your solution below : Bohr-Rutherford diagram is a simple atomic model that shows the…

Q: what are drawbacks of bohr atomic model?

A: Bohr’s atom model is only primarily for hydrogen atom.It could not explain spectra of multi-electron…

Q: Which of the multiple choice is the right answer confused. Question-why does the atomic radius of…

A: We have to explain why does the atomic radius of elements get bigger as we go from top to bottom on…

Q: Talk briefly about what is the history of the evolution of atomic models from Greece to the current…

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Q: MULTIPLE CHOICE QUESTION Thomson's idea of the atom looked like chocolate chip cookies because…

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Q: Which of the following observations did NOT lead to the development of the Bohr model of an atom?…

A:

Q: Write Postulates of Dalton’s atomic theory.

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Q: For each subatomic particle of an atom, state its chargeand location. Which region of an atom is…

A: we know that an atom is composed of neutrons, protons, and electrons.

Q: Which of the following would have similar properties to those of neon?  Answer choices in the…

A: The atom which is having same number of valence electron as that in Ne or is present in the same…

Q: What is correct from multiple choice

A: Dalton’s Atomic Theory: Atoms are the indivisible building blocks of all matter and cannot be…

Q: We learned about three different models describing a stable atom. In three to five sentences, answer…

A: Rutherford compare his model to solar system model . Planets moves around sun and in the same way…

Q: As one progresses from top to bottom of a group on the periodic table, first ionization energy…

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Q: Which element consists of positive ions immersed in a “sea” of mobile electrons ?

A: Given : element consists of positive ions immersed in a “sea” of mobile electrons.

Q: What was the major contribution of Bohr’s atomic model?

A: Bohr made a major contribution in the understanding of structure of atoms and in the development of…

Q: Which of the following statements about quantum mechanics is NOT correct?   a Electrons are…

A: According to the Quantum mechanical theory-  • Electrons are negatively charged particles. •…

Q: Which of the following characteristics DOES NOT DESCRIBE atoms on the top right of the periodic…

A: ans: D Bigger ,more rings 1 or 2 valence electrons REASON: In periodic table from left to right…

Q: Directions: Draw your own concept of an atom. You may refer to the model given by Bohr for an idea…

A:

Q: According to the bohr model of an atom with 14 electrons, how many electrons are in the third energy…

A: Bohr model states that electrons in atoms move in circular orbits around a central nucleus. These…

Q: QUESTION 21 After Rutherford's discovery of the nucleus, Bohr developed a model of the atom in which…

A: After Rutherford's model, Bohr developed a model in which the nucleus was positively charged…

Q: QUESTION 22 After Rutherford's discovery of the nucleus, Bohr developed a model of the atom in which…

A: Atomic model is given by various scientist Rutherford atomic model Thomsan atomic model Bohr atomic…

Q: How do we know that there's an electron(s) if the atomic number indirectly tells the number of…

A: The atomic number is equal to the number of protons present in the nucleus of the atom.

Q: QUESTION 18 The first scientist introduced the quantum concept that radiation is not emitted in…

A: Quantum concept that radiation is not emitted in continues amount but in discreet bundles of energy.

Q: Describe all details with chronological facts, that how a newly developed atomic model could…

A: An atom has a central positive unit that is made up of protons and neutrons. The existence of the…

Q: Question 5 Which of the following statements is true? O Bohr's model confirmed the existence of…

A: Answer: Option 1 is a correct option. After Rutherford's experiment, Bohr suggest an atomic model…

Q: There are electrons present in the d sublevel of a neutral atom of cobalt. (Give me the number)

A: Number of d-electron in the neutral atom of cobalt can be determined by writing the electronic…

Q: Select the correct answer. Why was Niels Bohr's atomic model superior to all the earlier models? OA…

A: It is superior beacuse it told that electron could revolve around the orbit without falling into it…

Q: Atomic lonization Answer these questions about the Number data table Energy (volts) (number) What is…

A: Since we only answer up to 3 sub-parts, we’ll answer the first 3. Please resubmit the question and…

Q: QUESTION 7 Which one of the following statements is NOT true?   a. Electrons behave like both…

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Q: .Reason from a scientific model. Write out a brief paragraph explaining why we see specific colors…

A: To describe the Bohr model of the atom and on the basis of it briefly explain why different colors…

Q: elect an appropriate statement that describes the de Broglie hypothesis. Select one: a. Electrons…

A: Matter waves are a central part of the theory of quantum mechanics, being an example of wave…

Q: 2. Evolving Models of the Atom. Draw and specify key features or discoveries associated with each of…

A: a).1. All matter is comprised of tiny, definite particles called atoms. 2. Atoms are indivisible and…

Q: what is the composed only of carbon,hydrogen, and halogen atoms?

A: The compound having Carbon and hydrogen only is called hydrocarbon. For example, Methane, CH4

Q: What is the maximum number of electrons that can occupy then = 3 shell?

A: n = 3  How many electrons can accommodate ?

Q: D They have the same number of electrons in their outer shell.

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Q: What is the neutral atom that has its first two energy levels filled, has 7 electrons in its third…

A: Identify the element name--

Q: Based on the bohr model explain the location of the lithium element on the periodic table. Why is it…

A: Answer

Q: Explain how the number of electrons is determined in atoms shell

A: For the given principal quantum number (or shell), n, the number of orbitals is the square of the n.…

Q: Identify the Period 4, Group 7A (17) element. • View Available Hint(s) lodine bromine boron aluminum

A: