An atom of Bromine - 81 has ____ protons and _____ neutrons. A) 35, 35 B) 55, 77.9 C) 35, 45 D) 35, 76

Q: There are three naturally occurring stable isotopes of magnesium: 24Mg, 25M., and 2°Mg, which have…

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A: Stability of the nucleus is generally influenced by 3 factors- Mass Defect: greater mass defect,…

Q: 1. There are 2 main elements. H. One element contains 26 protons and another of 29 protons. III.…

A:

Q: Strontium-89 chloride is in a class of drugs known as radioisotopes.It delivers radiation to cancer…

A: Nuclear chemistry is branch of chemistry in which we deal with nuclear fission and fusion reaction.…

Q: b Po undergoes four decay reactions: a, B, a, B. Step 1. 218 Po undergoes a decay to give 14 Pb 84…

A:

Q: If mass # is 141 and the # of protons 58, what is the atomic symbol and the # of neutrons?

A: Given:The mass number  of atom = 141 The no of proton = 58

Q: ilver is composed of two naturally occurring isotopes: Ag-107 (51.839%) and Ag-109. The ratio of the…

A: First calculate the percent abundance of Ag-109.

Q: greatest number of stable isotopes? Ne, F, Na

A: The objective is to determine the greatest number stable of isotopes.

Q: 48 P HP Cr Fe Ga Se Kr Sr Te RAT Hg 201T1 [Review Topics] Some Radioactive Isotopes Useful in…

A: 1) We know that, Atomic number of an element(Z) = No. of protons Mass number (A) = No. of protons(Z)…

Q: O Po undergoes four decay reactions: a, B, a, B. Step 1. 218 Po undergoes a decay to give 214Pb 84…

A:

Q: 1)the chemical symbol found on the periodic table is ?  2) the number of protons for the product is…

A: 1.Now we know that the number must be same on both the product as well as the reactant Side and we…

Q: C Po undergoes four decay reactions: a, B, a, ß. Step 1. 218 Po undergoes a decay to give 84 Step 2.…

A: Nuclear chemistry is the branch of chemistry in which we deal with positron emission, electron…

Q: 55 3. jA 25 Mn2+ ion has protons, neutrons, and electrons. а) 23; 30; 25 с) 30;B 25; 23 b) 25; 30;…

A: We will identify proton neutron and electron

Q: Strontium-89 chloride is in a class of drugs known as radioisotopes. It delivers radiation to cancer…

A:

Q: two protons and two neutrons are removed from the nucleus of an neon-20 atom, a nucleus of which…

A:

Q: కా 1. Indi cate the number of protons and neutrons in the following nuclei: c) Dotassium - 39

A: Atomic number = number of protons Mass number = number of neutrons + number of protons If atom is…

Q: Unstable isotopes are not radioactive. O True O False

A:

Q: A voltaic cell with an alkaline (basic) aqueous electrolyte is based on the reaction between…

A: Here we are required to find the reaction which would occur at cathode for a voltaic cell

Q: In the notation 289 115 Mc, the number 289 is the 3 number of electrons atomic number atomic mass…

A:

Q: 13) How many neutrons are in carbon-12 ? A) 7 B) 8 C) 6 14) Identify the chalcogen that has 18…

A:

Q: 14) List the number of protons, neutrons, and nucleons (protons + neutrons), in that order, 137 55…

A: The atomic number of an atom is the number of protons present in the atom. For a neutral atom, the…

Q: Alpha particles are identical to   Question 12 options:   a)  hydrogen atoms.   b)  electrons.…

A: In this question, we have to find out the correct answer of given problem by the help of the…

Q: What I still pass 15 protons 15 electrons and 17 neutrons?

A: Isotope:

Q: Negatively charged particles of radiation emitted from the decay of radioactive substances are known…

A: A) Protons : It is one of the fundamental particle of an atom. It is basically  positively charged…

Q: Calcium is a major component of human bones. In the absence of Calcium which of the following…

A:

Q: Positively charged particles of radiation emitted from the decay of radioactive substances are known…

A: Nuclear or radiation decay are primarily of three types: alpha, beta and gamma decay. Alpha…

Q: The isotopic abundances of cadmium are given in the table below. Nuclide Abundance (%) Mass 106Cd…

A: The isotopic abundances of cadmium are given in the table below.    Nuclide Abundance % Mass…

Q: 13) How many neutrons are in carbon-12 ? A) 7 B) 8 C) 6 14) Identify the chalcogen that has 18…

A: " Since you have posted a question with multiple sub-parts , we will solve first three sub-parts…

Q: In 2 H, +, number of neutrons are Select one: а. О O b. 2 Ос. О с. 3 O d. 1

A: In this question, we will determine the number of neutrons.  You can see details solution below.

Atoms and Molecules

An atom is the smallest unit of an element that possesses all the properties of that particular element. Molecules are the smallest unit of a substance that possess all the properties of that particular substance.