2.89 In which one of the following pairs do the two species resemble each other most closely in chemical properties: (a) }H and }H*, (b) '¾N and ';N³¯, (c) ?C and '¿C? Explain.

Q: 241 Am 2 n +? 95 Express your answer as an isotope.

A: We have the nuclear reaction as: 42He + 24195 Am ----> 210n + ?  We need to determine the element…

Q: 4. When writing a complete atomic symbol, there are four numbers used – in the upper-left,…

A: The atomic symbol describes an atom completely.

Q: Two elements, R and Q, combine to form two binary compounds. In the first compound, 14.0 g of R…

A: Given: First Compound = 14.0 g R + 3.00 g Q  Second Compound =  7.00 g R + 4.50 g Q = RQ

Q: The isotopes of bromine have the following relative abundances 79Br = 50.5%,  81Br = 49.8%  State…

A: Isotopes of a same element could be in two or more forms having same atomic number but different…

Q: The atomic weight of Ga is 69.72 amu. There are only two naturally occurring isotopes of gallium: 69…

A: Given atomic weight of Ga is 69.72 amu

Q: 2.105 For the noble gases (the Group 8A elements) ¿He, 10Ne, 18 Ar, Kr, and Xe, (a) determine the…

A: The atomic number defined as the number of electrons or number of protons present in a neutral atom.…

Q: (2.3) Which of the following pairs shows the law of multiple proportions? O All of these O C3H7Cl…

A: Given,  Which of the following pairs shows the law of multiple proportions.

Q: How many protons, neutrons,and electrons are there in an atom of (a) 10 5B, (b) 36Ar, (c) 8538Sr,…

A: An atom consists of sub-atomic particles which are protons, neutrons (both present inside the…

Q: 1. The noble gas, neon, has three isotopes of masses, 22, 21, and 20. If the isotopes have the…

A: Average atomic mass calculation: (1) Consider the given information is as follows;…

Q: A newly discovered element consists of only two naturally occurring isotopes. Isotope A has an…

A: Given : There are two naturally occurring isotopes of an element. Atomic mass of isotope A = 204.5…

Q: The two naturally occurring isotopes of boron, boron-10 and boron-11, have masses of10.0129370 u and…

A: Atoms that have the equal number of protons but distinct numbers of neutrons are termed as isotopes.…

Q: Iron exists in nature as a mixture of predominantly three isotopes: ⁵⁴₂₆Fe (53.94 amu), ⁵⁶₂₆Fe…

A: We have to calculate the percentage of rarest of three isotopes.

Q: 2.5.1 Boron has two naturally occurring isotopes, 1°B and "B, which have masses 10.0129 and 11.0093…

A: Isotopes are the elements which have same atomic number but different mass number which means that…

Q: The atomic weight of Cl is 35.45 amu. There are only two naturally occurring isotopes of chlorine:…

A: Given  The average atomic weight of Cl = 35.45 amu  The weight of 35Cl   = 35 amu  The weight of…

Q: 3. A) Boron, element number 5, exists in only two common stable isotopes. They are B-10 and B-11.…

A: A) Given : There are only 2 naturally isotopes of boron i.e B-10 and B-11. The average atomic mass…

Q: An element consists of two isotopes and has an average atomic weight of 85.561 a.m.u. The abundance…

A:

Q: On a planet in another galaxy, tellurium exists as only two isotopes, Te123 and Te130. The masses…

A: The average atomic mass of element can be calculated by adding the masses of the isotopes each…

Q: Imagine an alternate reality. The Thomson cathode ray experiments arrived at a charge to mass ratio,…

A: Here, we have to determine mass of electron.

Q: When carbon and oxygen react, two different compounds can form dependingon the conditions. Compound…

A: Given observation: When carbon and oxygen react, two compounds are formed. Compound A contains 1.333…

Q: Which statement about subatomic particles are false? Protons and neutrons have charges of the same…

A: Proton, neutron and electrons are the subatomic particles present in an atom.

Q: Copper has 2 stable isotopes, namely Cu-63 and Cu-65. The atomic masses of the said isotopes are…

A:

Q: Which of the following statements about subatomic particles are true, and which are false? Drag the…

A: Any atom is made up of 3 subatomic particles. 1) electron  2) proton  3) neutron

Q: Which of the following pairs would be isotopes? A) 46X & 46X B) 52X & 53X C) 62X & 63X D) none is a…

A: Which of the following pairs would be isotopes?

Q: A generic element, Q, has two isotopes, 195Q and 190Q, and an average atomic mass of 191.86 amu. The…

A: Given- Average atomic mass of Q = 191.86 amu Natural abundance of isotope 195Q = 38% Natural…

Q: 2. Which of the following best describes an element? a. A neutral substance consisting of a cation…

A: Element is a substance which consists only of atoms having same atomic number and hence same…

Q: Thallium has two stable isotopes, 203TIand 205TI. Knowing that the atomic weight of thallium is…

A:

Q: Iron exists in nature as a mixture of predominantly three isotopes: 54, (53.94 amu), 5® 26FE (55.93…

A:

Q: Deducing Relative Abundance by Semi-Quantitative Reasoning- Without Doing Math How would I go about…

A: More number of neutrons are required for higher atomic number elements to avoid repulsion.

Q: What is the % mass of oxygen in citric acid, C6H807?

A:

Q: How many protons, electrons, and neutrons, respectively, does 129Cs have?

A: Since we know that  Mass Number = Number of Protons + Number of neutrons  And  Atomic Number =…

Q: B) The average atomic mass of chlorine is 35.453. Does this mean that there are just two stable…

A: In order to explain the answer for the above question we have to first understand the given question…

Q: 19. Two particles X and Y have the following composition: X: 17 protons, 18 neutrons, 17 electrons…

A: The question is based on the concept of atomic structure. there are various subatomic particles like…

Q: There are three isotopes of an element, X-28, X-29, and X-30, with relative abundances of 92.2297%,…

A: The mass number of Silicon = 30

Q: Copper has an atomic mass of 63.546 AMU. There are two isotopes, Cu-63 with a mass of 62.92969 AMU…

A: Given: Average atomic mass of Cu = 63.546  amu Mass of 63Cu = 62.92969  amu Mass of 65Cu = 64.927794…

Q: When carbon and oxygen react, two different compounds can form dependingon the conditions. Compound…

A: The law of multiple proportions is the third postulate of Dalton's atomic theory. Law of multiple…

Q: Element X has two naturally occurring isotopes, 20X with a mass of 19.99 amu and 22X with a mass of…

A:

Q: The anticancer drug Platinol (Cisplatin), Pt(NH₃)₂Cl₂,reacts with the cancer cell’s DNA and…

A: The amount of a particular compound present in a solution is expressed by the various concentration…

Q: 4. Which of the following statements are trme of chemical reactions? a. The number and types of…

A: Which of the following statements are true of chemical reactions?

Q: How many protons and neutrons are in 37Cl?

A: The smallest unit of ordinary matter that makes up a chemical element is an atom. Every solid,…

Q: 5. Which of the following is a species with 12 protons and 10 electrons? a) Ne?* b) Ti2* c) Mg? d)…

A: Number of proton = atomic number Number of electrons =( atomic number) +- charges

Q: What is the name of this element, and how many protons and neutrons does this isotope have in its…

A: The objective of the question is to write the name of the given element and to find the number of…

Q: An unknown element X has the following isotopes: 12°X (22.00% abundant), 128X (34.00% abundant),…

A: Given that element = X, With three isotopes. X-126, X-128 and X-130. The percentage abundance are:…

Q: A hypothetical element exists as two isotopes: I = 68.00 amu and II = 71.00 amu. If the percent…

A:

Q: 2. Explain how Lavoisier's Law of Conservation of Mass supports Democritus' theory that atoms cannot…

A: Please find your solution below : Atom is the smallest unit of matter. It is defined as the basic…

Q: what is the atomic mass of an unidentified element that has 2 naturally occurring isotopes with the…

A:

Q: Imagine that you are given information about an element X which has two naturally occuring isotopes.…

A: