Description : The mass number of a nucleus is – (1) always less than its atomic number (2) always more than its atomic number (3) always equal to its atomic number (4) sometimes more - and somtimes equal to its atomic number
Last Answer : (4) sometimes more - and somtimes equal to its atomic number Explanation: Mass number = protons or mass of electron (atomic number) + neutrons. So it is mostly greater than the atomic number. At best, it can be equal to the atomic number.
Description : The mass number of a nucleus is - (1) always less than its atomic number (2) the sum of the number of protons and neutrons present in the nucleus (3) always more than the atomic weight (4) a fraction
Last Answer : (2) the sum of the number of protons and neutrons present in the nucleus
Description : Why when I somtimes download an application online it sometimes stores application and all files in download file and not in application folder?
Last Answer : is it ok to just move applcstion folder tmfrom download folder to application folder and leave all the other text documents and other folders in download folder?
Description : The mass number of a nucleus is (a) Always less than its atomic number (b) The sum of the number of protons and neutrons present in the nucleus (c) Always more than the atomic weight (d) A fraction
Last Answer : Ans:(b)
Description : An atom of an element has atomic number 17 and mass number 36. The number of neutrons in its nucleus is– (1) 17 (2) 19 (3) 36 (4) 53
Last Answer : (2) 19 Explanation: Mass Number = number of protons (atomic number) + nu.sriber of neutrons. So as per the question, 36= number of neutrons + 17. Number of neutrons= 36 -17= 19
Description : An atom of an element has atomic number 17 and mass number 36. The number of neutrons in its nucleus is (1) 17 (2) 19 (3) 36 (4) 53
Last Answer : 19
Description : The atomic number of carbon is 6 and its atomic mass is 12. How many are there protons in the nucleus of carbon ? (1) 6 (2) 12 (3) 18 (4) Zero
Last Answer : 6
Description : If an atomic number of an element is 6 and its mass is 14 how many neutrons are contained in the nucleus?
Last Answer : jjjj
Description : Moment of resistance for a under reinforced section --------- that of a critical section [ A ] Is equal to [ B ] Is always greater than [ C ] Is less than [ D ] May be sometimes greater than
Last Answer : [ C ] Is less than
Description : The depth of neutral axis for a balanced section is --------- the depth of critical neutral axis [ A ] equal [ B ] always greater than [ C ] always less than [ D ] may be sometimes greater than
Last Answer : [ A ] equal
Description : The emission of an a-particle causes the resultant nucleus to have (A) More atomic weight and less atomic number (B) Less atomic weight and less atomic number (C) Less atomic weight and more atomic number (D) None of these
Last Answer : (A) More atomic weight and less atomic number
Description : The new nucleus formed after β-decay of a radioactive element has (A) Less atomic number (B) Less atomic weight (C) More atomic number (D) More atomic weight
Last Answer : (A) Less atomic number
Description : In Rutherford's experiment involving the deflection of alpha particles by atomic nuclei, the fact that some of the alpha particles bombarding the thin gold foil were back-scattered, led to one of the ... its nucleus z) the nucleus of a gold atom occupies nearly the entire space of the atom
Last Answer : ANSWER: Y -- MOST OF THE MASS OF A GOLD ATOM IS IN ITS NUCLEUS
Description : The nuclear reaction in which a heavy nucleus splits into two nuclei of nearly equal mass is called - (1) Nuclear fusion (2) Nuclear fission (3) Nuclear reaction (4) Fast breeding
Last Answer : (2) Nuclear fission Explanation: Nuclear fission is a process used to create energy. It is when an atom splits apart into smaller atoms. The process gives off a lot of energy, and is used in nuclear weapons and nuclear reactors.
Description : The atomic number of a nucleus will increase by 1 if which of the following is emitted by the nucleus? w) an alpha particle x) a positron y) a beta particle z) a gamma ray
Last Answer : ANSWER: Y -- BETA PARTICLE
Description : (A) In a nuclear fission process, the total mass of fragment is always greater than the mass of the original nucleus. (R ) Difference in the mass due
Last Answer : (A) In a nuclear fission process, the total mass of fragment is always greater than the mass of the original ... . If both (A) and (R ) are incorrect.
Description : The neutrons in an atom: w) are part of the nuclear charge x) rotate about the nucleus in elliptical orbits y) vary in number with different isotopes z) are always equal in number to the total number of protons
Last Answer : ANSWER: Y -- VARY IN NUMBER WITH DIFFERENT ISOTOPES
Description : What is the number of protons in the nucleus equal but not equal in mass ?
Last Answer : Nuclei that have the same number of protons but not the same mass are called isotopes.
Description : The mass number of an element is equal to the number of __________ in the nucleus. (A) Electrons (B) Neutrons (C) Protons (D) Neutrons plus protons (i.e., nucleons)
Last Answer : (D) Neutrons plus protons (i.e., nucleons)
Description : The sum of masses of two nuclei produced in nuclear fission compared to the mass of original nucleus is (A) Less (B) More (C) Same (D) Much more
Last Answer : (A) Less
Description : The correct statement is (a) Two Isotones always have the same atomic number (b) Two isotopes always have the same mass number (c) Two isobars always have the same atomic number (d) Two isobars always have the same mass number
Last Answer : Ans:(d)
Description : Choose the incorrect statement from the following: (a) The nuclear becomes weak if the nucleus contains too many protons compared to the number of neutrons (b) The nuclear force becomes weak if the ... (d) The nuclear force becomes very strong if the nucleus contains a large number of nucleons.
Description : Electron can exist in the atom but outside the nucleus because a) speed of electron is equal to the speed of light b) speed of electron is more than speed of light c) speed of electron is less than speed of light d) None of these
Last Answer : c) speed of electron is less than speed of light
Description : What does the atomic number tell you about what is inside the nucleus of an atom?
Last Answer : The atomic number is equal to the number of protons.
Description : All atoms with the same number of ______ in the atomic nucleus are the same element?
Last Answer : progdk
Description : How many neutrons are present in the nucleus of an element with an atomic weight of 119 and an atomic number of 50?
Last Answer : ANSWER: 69
Description : When an atom undergoes beta decay, the atomic number of the nucleus: w) is unchanged x) increases by one y) decreases by one z) none of the above
Last Answer : ANSWER: X -- INCREASES BY ONE
Description : After a chemical reaction, the total mass of reactants and products [MP PMT 1989] (A) Is always increased (B) Is always decreased (C) Is not changed (D) Is always less or more
Last Answer : (C) Is not changed
Description : When an atomic nucleus emits a beta particle, one of its neutrons disintegrates into one of the following set of particles. Does it disintegrate into: w) a positron and an electron x) a proton, an ... and an antineutrino y) a proton, an electron, and a positron z) a neutrino and an antineutrino
Last Answer : ANSWER: X -- A PROTON, AN ELECTRON AND AN ANTINEUTRINO
Description : (3) two light nuclei combine to form a heavy nucleus Explanation: Nuclear fusion is the process of making a single heavy nucleus (part of an atom) from two lighter nuclei. The difference in mass ... . Fusion is the process that powers active or "main sequence" stars, or other high magnitude stars.
Last Answer : Helium is added to the oxygen supply of deep sea divers because it is - (1) less poisonous than nitrogen (2) (2) Lighter than nitrogen (3) Readily miscible with oxygen (4) less soluble in blood than nitrogen at high pressure
Description : Which one of the following has greatest mass? (1) electron (2) proton (3) neutron (4) hydrogen nucleus
Last Answer : (3) neutron
Description : Gamma rays are similar to X rays in which of the following ways? w) they have neither rest mass nor charge x) they can be bent in an electric field y) they originate within the nucleus z) they are of low energy
Last Answer : ANSWER: W -- HAVE NEITHER REST MASS NOR CHARGE
Description : Alpha rays are different from beta rays in one of the following ways. Are they different since: w) alpha rays are deflected in a magnetic field and beta rays are not x) alpha rays are ... negative charge z) alpha rays are produced within the nucleus and beta rays are produced outside the nucleus
Last Answer : ANSWER: Y -- ALPHA RAYS HAVE A POSITIVE CHARGE AND BETA RAYS HAVE A NEGATIVE CHARGE
Description : Which one of the following has greatest mass ? (1) electron (2) proton (3) neutron (4) hydrogen nucleus
Last Answer : neutron
Description : meso-Tartaric acid is (a) sometimes optically active (b) always optically active (c) sometimes optically inactive (d) always optically inactive
Last Answer : always optically inactive
Description : Electrons orbiting an atomic nucleus exist in a quantum probabilistic location. Are the actual measurements of that location infinite?
Last Answer : answer:The strange behavior at the quantum level produces the rock that Dr. Johnson kicks when he refutes Bishop Berkeley. In a Woody Allen movie, a young, frightened Woody couldn’t do his homework, because the Universe was expanding. His mother’s “What is it your business?”
Description : In an atomic nucleus, by which force are neutrons and protons held together? -Do You Know?
Last Answer : answer:
Last Answer : Atom In the nucleus Protons, Neutrons Stays.
Description : Making use of the tables of atomic masses, find: (a) the mean binding energy per one nucleon in `O^(16)` nucleus (b) The binding energy of neutron and
Last Answer : Making use of the tables of atomic masses, find: (a) the mean binding energy per one nucleon in `O^( ... and an alpha-particle in a `B^(11)` nuclues.
Description : In the modern quantum-based atomic theory what is the name given to a particular space around the nucleus in which an electron moves?
Last Answer : The name given to a particular space around the nucleus in whichan electron moves is Orbital
Description : In an atomic nucleus, by which force are neutrons and protons held together?
Last Answer : – Exchange forces
Last Answer : Exchange forces
Description : Pick out the correct statement. (A) Loss of electrons from neutral atoms produces negative ions (B) The radius of nucleus & atomic size are of the order of 10 -12 cm & 10 - 8 cm respectively (C) Gain of electrons by neutral atoms form cations
Last Answer : (B) The radius of nucleus & atomic size are of the order of 10 -12 cm & 10 - 8 cm respectivel
Description : The sub atomic particles of Nucleus are?
Last Answer : Protons and Neutrons
Description : These positively charged particles are found in the atomic nucleus. a. Protons only b. Electrons only c. Protons and neutrons d. Neutrons only
Last Answer : a. Protons only
Description : an atomic nucleus, by which force are neutrons and protons held together?
Description : The splitting of an atomic nucleus is called: w) fission x) fusion y) cleavage z) separation
Last Answer : ANSWER: W -- FISSION
Description : atomic mass unit is equal to?
Last Answer : 1.6605 x 104-27 Kg