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 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 : 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 : 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 : How many protons and neutrons are in the nucleus of isotope with mass of 68.926?
Last Answer : p,n =31,38P=31 (from Periodic Table)N= 68.926-31=37.926
Description : The binding energy of a nucleus is defined as one of the following. Is this definition: w) the energy equivalent to its mass x) the mass difference between its neutrons and protons y) the energy ... the difference between the mass of the nucleus and the sum of the masses of its protons and neutrons
Last Answer : ANSWER: Z -- THE DIFFERENCE BETWEEN THE MASS OF THE NUCLEUS AND THE UM
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 : In the equation of a nuclear reaction, all but one of the following quantities are equal to each other on both sides of the equation. Which quantity is NOT conserved: w) the net electric charge x) the total mass-energy y) the number of protons z) the number of nucleons
Last Answer : ANSWER: Y -- THE NUMBER OF PROTONS
Description : What about the nuclei whose protons are not equal but their mass is equal ?
Last Answer : All atoms that have the same mass but different atomic numbers are called isobars. E.g. 4018Ar and 4019Ca ; Here both argon and calcium have a mass of 40 but the atomic number is 18 and 19 , respectively.
Description : What identifies the number of protons in the nucleus of an atom?
Last Answer : The atomic number refers to the number of protons in anelement.
Description : Which of these terms describes the number of protons in the nucleus of an atom?
Last Answer : atomic number A+
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.
Last Answer : Ans:(d)
Description : (2) the sum of the number of protons and neutrons present in the nucleus
Last Answer : Which one of the following takes place during a nuclear fusion? (1) a heavy nucleus bombarded by neutrons breaks up (2) a heavy nucleus breaks up spontaneously (3) two light nuclei combine to form a heavy nucleus (4) a light nucleus breaks up spontaneously
Description : The chemical bahaviour of an atom depends upon (1) the number of protons in its nucleus (2) the number of neutrons in the nucleus (3) the number of electrons orbiting around the nucleus (4) the number of nucleons in the nucleus
Last Answer : the number of electrons orbiting around the nucleus
Description : The mass number of an atom is equal to (a) The number of protons (b) The number of protons and electrons (c) The number of nucleons (d) The number of neutrons
Last Answer : Ans:(c)
Description : In an atomic nucleus, by which force are neutrons and protons held together? -Do You Know?
Last Answer : answer:
Description : (A) The nucleus of gold is stable even though there is a very strong coulombic repulsion among the protons. (R ) The inverse square coulomb force is e
Last Answer : (A) The nucleus of gold is stable even though there is a very strong coulombic repulsion among the protons. ... . If both (A) and (R ) are incorrect.
Description : (A) Protons are better projectiles than neutrons. (R ) The neutrons being neutral do not experience repulsion from positively charged nucleus.
Last Answer : (A) Protons are better projectiles than neutrons. (R ) The neutrons being neutral do not experience repulsion ... If both (A) and (R ) are incorrect.
Description : `.^(234)U` has 92 protons and 234 nucleons total in tis nucleus. It decays by emitting an alpha particle. After the decay it becomes:
Last Answer : `.^(234)U` has 92 protons and 234 nucleons total in tis nucleus. It decays by emitting an alpha particle. After the ... C. `.^(230)Th` D. `.^(230)Ra`
Description : What type of radioactive decay releases energy from the nucleus without a change of protons neutrons?
Last Answer : This is a gamma-decay.
Description : What atom of nitrogen has seven protons in its nucleus how many electrons does it have?
Last Answer : 14
Description : How many protons does an atom of Xenon have in its nucleus?
Last Answer : What is the answer ?
Description : When an Atom of carbon has 6 protons and 7 neutrons in its nucleus if the atom is neutral how many electrons does it have?
Last Answer : Need answer
Description : Which universal force acts on protons and neutrons in an atom nucleus?
Last Answer : The strong nuclear force.
Description : How many protons are found in the nucleus of an atom?
Last Answer : 11
Description : In an atomic nucleus, by which force are neutrons and protons held together?
Last Answer : – Exchange forces
Description : A substance emits energy which is detected as a line emission in the visible region using a spectroscope. The origin of this energy is (a) Vibrational energy of the molecules (b) Rotational energy of the molecules (c) Energy of orbital electrons (d) Energy of protons in the nucleus.
Description : The nucleus of an atom consists of (a) Protons + Electrons (b) Only Protons (c) Protons + neutrons + electrons (d) Protons and neutrons
Description : Which of the following does the Nucleus of an atom consist of? (1) Protons and neutrons (2) Protons and electrons (3) Electrons (4) Protons
Last Answer : (1) Protons and neutrons Explanation: The nucleus is the small, dense region consisting of protons and neutrons at the center of an atom. Protons and neutrons are bound together to form a ... nucleus was discovered in 1911 by Ernest Rutherford based on the 1909 Geiger-Marsden gold foil experiment.
Description : What nucleus of atom contains? (1) protons (2) electrons (3) electrons and protons (4) protons and neutrons
Last Answer : (4) protons and neutrons Explanation: The nucleus, that dense central core of the atom, contains both protons and neutrons. Electrons are outside the nucleus in energy levels.
Description : What particles move around the nucleus of an atom and are negatively charged? (1) Electrons (2) Protons (3) Positrons (4) Neutrons
Last Answer : (1) Electrons Explanation: Circling around outside the nucleus are tiny little particles called electrons. Electrons have a negative charge. Electrons spin as they circle the nucleus billions of times every ... or lose energy, they jump between energy levels as they are rotating around the nucleus.
Description : The nucleus of an atom consists of - (1) electrons and neutrons (2) electrons and protons (3) protons and neutrons (4) All of the above
Last Answer : (3) protons and neutrons Explanation: The atomic nucleus consists of nucleons—protons and neutrons. Protons and neutrons are made of quarks and held together by the strong force generated by gluon exchange between quarks.
Last Answer : Exchange forces
Description : Nucleus of 92U235 contains __________ protons. (A) 92 (B) 235 (C) 143 (D) 325
Last Answer : (A) 92
Description : Positron is a/an (A) Nucleus having two protons (B) Helium nucleus (C) Electron with positive charge (D) Nucleus with one proton and one neutron
Last Answer : (C) Electron with positive charge
Description : The protons and neutrons are found in the center of the atom, which is called the -----of the atom? A. Nucleus (Answer) B. Headquarters C. Hub D. None of These
Last Answer : A. Nucleus (Answer)
Description : What are the three subatomic particles of an atom? A. Protons,Neutrons & Electrons (Answer) B. Protons,Nucleus & Electrons C. Protons,Nucleus & Elements. D. Elements,Nucleus & Protons
Last Answer : A. Protons,Neutrons & Electrons (Answer)
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?
Last Answer : Protons and neutrons
Last Answer : Electrons
Description : Which nuclides having the same number of neutrons but different number of protons or mass number? -Do You Know?
Description : Which nuclides having the same number of neutrons but different number of protons or mass number?
Last Answer : Isotones
Description : Pick out the wrong statement. (A) Atoms with same number of nucleons but different number of protons are called isobars (B) Atoms with same number of protons but different number of nucleons are ... product formed by emission of α-particle has mass number less by 4 units than the parent nuclide
Last Answer : (B) Atoms with same number of protons but different number of nucleons are called isoters
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) 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 : sometimes more and somtimes equal to its atomic number
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.