Which element has the lightest atoms?

Q: Supposing that an electron in a hydrogen atom is positioned at an average distance of 5.29x10–11 m…

A: *The distance is r = 5.29 × 10-11 m *The charge on the electron is qe = -1.6 × 10-19 C * The charge…

Q: Which of the following wavelengths of light is emitted by this atom when an

A: Answer is 776 nm  last one In dealing energy and wavelength of photon   product of  Planck's…

Q: 10 8. 6 + t (s) 4 6. 8 10 12 -2 -4 -6 + -10 x (cm) 8.

A: Time period is the time taken in one complete oscillation. Amplitude is the maximum displacement.

Q: Where in the atom is most of its mass concentrated?

A: The atom comprises of three sub-atomic particles, proton electron and neutron. The protons and…

Q: What is atomic spectra?

A: Atomic spectra are the range of characteristic frequencies of electromagnetic radiation that are…

Q: How many shells are represented in the presently known periodic table?

A: In the current periodic table elements may have up to seven shells, and in each shell, there are…

Q: Choose the BEST answer to the following. When an element ejects a beta particle, the atomic number…

A: Answer:bi,e increases by 1.

Q: A neutral atom of the element potassium (K) has A 19 protons. B. 20 neutrons. C. 39 electrons. 58…

A: No.of protons in an atom is determined by atomic number of that atom .

Q: In addition to their electrical attraction, electrons and protons attract each other…

A: Why gravitational attraction is not considered when trying to understand the structure of an atom .

Q: What are the different kinds of particles in the atom's nucleus? Compare their properties with each…

A:

Q: If the size of a nucleus (in the range of 10-15 to 10-14 m) is scaled up to the tip of a sharp pin,…

A: The actual size of the nucleus is, 10-15m.The apparent size of the nucleus is, 10-5mThen, the…

Q: How can elements with low atomic numbers have so many spectral lines?

A: The electron in the lower level orbit jumps into higher level orbit when an extra amount of energy…

Q: Where were the atoms that make up a newborn infant “manufactured”?

A:

Q: How do electrons fill energy orbitals?

A: The electrons fill the atomic energy orbitals in a certain pattern depending on the energy of the…

Q: Which of the following diagrams best represents the size of the atomic nucleus relative to the size…

A:

Q: A typical atomic nucleus is about 5x10^-15m in radius. Use the uncertainty principle to place a…

A: Given values: Nucleus radius ∆x=5×10-15 m

Q: Why do lithium, potassium, and sodium exhibit similar chemical properties?

A: Given:  Lithium, potassium, sodium

Q: What does the atomic number of an element tell you about the element?

A: Step 1Atomic number is the basic property of the element, it helps one identify the element. Atomic…

Q: F (N) 4 3 t (s) ol 1 2 3 4 5

A: Given,  Mass of the particle, m = 2.15 kg

Q: An alpha particle is: 'n Alfa-deeltjie is: OA. a helium atom with two electrons removed / 'n…

A: 19) An alpha particle is produced from a radioactive nuclei during a radioactive decay. Two protons…

Q: Why don't electrons in the atom enter the nucleus?

A: In electron capture, an atomic electron is absorbed by a proton in the nucleus, turning the proton…

Q: Which has more potential energy relative to the nucleus: electrons in inner electron shells or…

A: Potential energy is inversely proportional to the distance from nucleus and where the force of…

Q: what are barrier elements ?

A: Barrier element are the elements which prevent the unintentional flow of gasses or fluids from a…

Q: What is the atomic number of a given element is equivalent to ?

A:

Q: What is an element?

A: The matter that exists in the purest form is called an element. They cannot be changed or broken by…

Q: Marie and Pierre Curie were both winners of the Nobel Prize in physics. This prize is one of the…

A: Curie's family is known for their scientific  achievements and their Nobel prizes are confirmation…

Q: How can we explain why electrons don’t spiral into the attracting nucleus?

A:

Q: What energy (in Joules) is released when an electron in a hydrogen atom falls n=5 to n=2?

A: electron in a hydrogen atom falls n=5 to n=2.

Q: Find the orientation of the elements upon which they act?

A:

Q: the subatomic particles effect the propertie

A: A Subatomic particle is nothing but a particle that is smaller than an atom in size. An atom can be…

Q: Do electron have the the most mass in the atom ?

A:

Q: What will happen when an electron returns to its original energy level?

A:

Q: A particular atom contains 29 electrons, 34 neutrons and 29 protons. Which element is this and tell…

A: A particular atom has 29 electrons, 34 neutrons and 29 protons. The atom is copper.

Q: Why is an electron microscope more suitable than an optical microscope for “seeing” objects of…

A: An optical microscope enlarges an object which produce the light in the wavelength of visible range.…

Q: How is it possible for an element to decay “forward in the periodic table”—that is, to decay to an…

A: It is possible for an element to decay “forward in the periodic table”—that is, to decay to an…

Q: In his Nobel Prize address, Ernst Rutherford announced that he had experimental evidence that the…

A: An alpha particle is a radioactive particle that has an atomic number of 2 and a mass number of 4.…

Q: How can an Electron be ejected from the nucleus if an atomic nucleus doesn't contain any electrons

A: In beta decay, the electron is emitted from the nucleus.

Q: What is electron emission?

A:

Q: What does the atomic number of an element tell us about it

A: Explanation: Atomic number of an element tells that the number of protons in the nucleus of the…

Q: In a neon tube, what occurs immediately after an atom is excited?

A:

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: