6. Find at least 5 elements whose symbols do not match their names 7. What are the two letters not appearing on the periodic table as a symbol or part of the symbol?

Q: Which of the following is not true of Bohr’s atomic model? a. The Coulomb force between the nucleus…

A: Postulates of Bohr's atomic model: Coulomb's force between electron and nucleus maintains the…

Q: An atom consists of 8 protons, 9 newtons and 8 electrons. What is it's atomic number? Select one:…

A: Given Number of Protons (np) = 8  Number of neutrons (nn)= 9  Number of electrons (ne )= 8  Atomic…

Q: 1. Why can’t visible light be used to view atomic nuclei?

A: Because an atom is so much smaller than the wavelength of visible light, it can't affect the way…

Q: 2. What do you think is the speed of the electron revolving around the nucleus of the hydrogen in…

A:

Q: Which of water, iron, ammonia, chromium, radon, and silicon are chemical compounds as opposed to…

A: We have to write the chemical compounds as opposed to elements

Q: What does the number of lines on the emission spectrum tell us about the electron decays for the…

A: Introduction: The atomic emission spectrum is the pattern of lines formed when it passes through the…

Q: 1: An electron revolves around a nucleus with frequency of revolution 1015 Hz. If the radius of…

A: To Find: Magnetic moment (M) Given: Frequency of revolution n=1015 Hz Radius of orbit r=0.53…

Q: Fill out the missing information. Use your periodic table! Element name Symbol Atomic # Blank 1:…

A:

Q: Explain how unstable heavy nuclides (atomic number > 83) may decompose to form nuclides of greater…

A: Given Explain how unstable heavy nuclides (atomic number > 83) may decompose to form nuclides of…

Q: 1. Describe briefly the two conflicting theories of the structure of the atom. d's old ord

A: The objective of the question is to provide a brief description of the two conflicting theories of…

Q: 6. The particles in the nucleus that have a positive charge are the b. neutrons a. electrons c.…

A: Part (6):Introduction: There are three fundamentals particles are present in the atom electrons,…

Q: A heavy hydrogen nucleus with one proton and one neutron is called   a. bi-hydrogen.   b. tritium.…

A: With one proton and one neutron in nucleus we get isotope of hydrogen which is called

Q: 13. Imaginary element Q has an atomic number of 129 and an atomic mass of 345. Complete the nuclear…

A: General equation for alpha decay: XZA →Y  z-2A-4 + H24e where,  A is mass number. Z is atomic…

Q: 9. What observations in the gold foil experiment made Rutherford conclude that atoms are mostly…

A: Q. No. 9: What observations in the gold foil experiment made Rutherford conclude that atoms are…

Q: 4.If someone wanted to build a scale model of the atom with a nucleus 1 m in diameter, how far away…

A: Given: Diameter = 1m or radius rn = 0.5 m To determine: How far away would the nearest electron need…

Q: The energy loss by a charged particle interacting with matter is described by: a. Linear energy…

A: Linear energy transfer describes the energy loss by charge particle interaction with matter.so the…

Q: Which one of the following diagnostic imaging technique produce images using magnetic field and…

A: Clinical resonance imaging (MRI) measures the spacial distribution of protons within the…

Q: To date the age of the oldest materi als, scientists would normally tum to the radioactivity of a.…

A:

Q: What is the evidence that the cathode rays in a discharge tube are negatively charged particles?

A: First Evidence: Cathode rays are negatively charged particles and it is originated from the cathode…

Q: Dis the correct answer How are lons formed from atoms? A. Atoms either lose protons, forming lons…

A: Which element has the most like calcium and why

Q: 17. The atomic energy level diagram accounts for A. the emission spectra of an atom B. the…

A: Energy level diagram

Q: Which of the following inconsistencies led to the rejection of the solar system model proposed by…

A: The solar system model proposed by Rutherford was neglected because any charge particle orbiting…

Q: 1. Neutral atom always has A) more neutrons than protons. B) more protons than electrons. C) the…

A: Given data:  The neutral atom Required: The relationship between number of protons, electrons and…

Q: Jesus sketched models of two different netural isotopes of sodium. If the isotope models are…

A: Introduction: Electrons are the elementary particles of the matter. Electrons cannot be divided…

Q: 2: An electron in an atom revolves around the nucleus in an orbit of radius 0.5 A. Calculate the…

A: The radius of orbit of the electron around the nucleus is given as, r=0.5 Ao (or) r=0.5×10-10 m The…

Q: For which one of the following, Bohr model is not valid?

A: Bohr model is applicable for only single electron species.

Q: a) The diagram below shows a plan view of the apparatus used by Rutherford and his team which led…

A: Alpha source in lead collimator, Travelling microscope with phosphorescent screen Gold foil

Q: 7. Cobalt-60 has many medical applications. If the half-life of cobalt-60 is 5.25 years, how long…

A: Half life ( T ) = 5.25 years  Initial amount of sample = No  Final amount of sample ( N ) = No / 3

Q: Question 1   a) The diagram below shows a plan view of the apparatus used by Rutherford and his…

A: The ultimate particles of matter are known as 'atoms'. In order to know how the positive charges and…

Q: Consider bromine, which occurs as a mixture of two isotopes: bromine-79, with a natural of 50.7% and…

A:

Q: ? 1. The mass on the periodic table. a. Atom ? _2. Region surrounding the nucleus where electrons…

A:

Q: Series capacitors Combinations: 1. Select three resistors and measure their capacitance with the…

A:

Q: Which one of the following diagnostic imaging technique produce images using magnetic field and…

A: Magnetic Resonance Imaging (MRI) is one way for healthcare professionals to look inside human body…

Q: Makh ihe lerms below to the correct definitions ? 1. The mass on the periodic table. 2. Region…

A: 1. Average atomic mass: The mass on the periodic table. 2. Electron cloud: region surrounding the…

Q: .Match each type of radiation with its properties. 1.can penetrate paper but not a sheet of metal…

A: Alpha particle can be blocked by the sheet of paper. Alpha particles are not enough strong to…

Q: True or False higher energy levels are stable. A.True B.False

A: Question. Higher energy levels are stable

Q: 10. What prevents gravity from pulling you through the ground to the center of Earth? Choose the…

A: Gravity or gravitational force is a force experienced by every body/object which has a mass. For an…

The Bohr model

Students often get confused between Rutherford’s model and Bohr model of an atom. They interpret the postulates of both these models to be the same, which is incorrect. Rutherford’s model differs from Bohr’s model in the following ways: