The following table gives numbers of electrons, protons, and neutrons in atoms or ions of a number of elements. Atom or Ion of Element Number of Electrons 5 Number of Protons 5 Number of Neutrons 5 Species A Species B Species C 18 19 20 36 35 46 (a) Which of the species are neutral? A

Q: By the end of this module you will be able to: • · ● · • . Module 2 Atomic Structure and…

A: “Since you have asked multiple questions, we will solve the first question for you. If you want any…

Q: The element X has three naturally occurring isotopes. The masses (amu) and % abundances of the…

A: To find the average atomic mass, summing the masses of the elements isotopes, each multiplied by…

Q: Cerium has four stable naturally occurring isotopes which are listed in the table with their…

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Q: Which subatomic particle(s) are found in the nucleus of the atom? Enter the subatomic particle or…

A: To find : Which subatomic particles are found in the nucleus of the atom.

Q: The element X has three naturally occurring isotopes. The masses (amu) and % abundances of the…

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Q: The hydroxides formed by three elements of period 3 are given in the following table. Write the…

A: Period 4 elements for group 1A--K, Potassium                                                2A--Ca,…

Q: The species, 4521X2- is:   an anion, with 21, protons, 24 neutrons, and 24 electrons   an anion,…

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Q: Fill in the systematic names of the following chemical compounds. Note: for compounds containing…

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Q: The element X has isotopes. The masses (atomic mass unit) and % abundances of the isotopes are given…

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Q: Imagine that you have discovered several stable isotopes of a new element, which you call element X.…

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Q: When a 220 g sample composed of ibuprofen (C13H1802) and some inert material is added, the mass of…

A: The mass percentage of an element in a given compound is a measure of the amount of the element…

Q: Two neutral objects are sketched below, in black and white. There are positive and negative electric…

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Q: 1.Determine the number of protons, electrons, and neutrons present in (a) 32P (b) 98Mo (c) 44Ca…

A: Since you have posted multiple questions, we will solve first question for you. Please repost other…

Q: Identify the missing information for each atom or ion. Note that the atoms and ions are not…

A: The mass number of any element is determined by the count of neutrons and protons making an atom of…

Q: A certain element XX has four isotopes. 5.845% of XX has a mass of 53.93961amuamu.…

A: Average mass of an element is defined as the atomic mass of the element calculated by multiplying…

Q: Hypothetical elements X and Y form a molecule XY2, in which both Y atoms are bonded to atom X (and…

A: X-Y distance in the molecule XY2 will be 186 pm.  Bond length of any molecule is given by the…

Q: Be sure to answer all parts. The following table gives numbers of electrons, protons, and neutrons…

A: The concept for determining charge and neutrality on the given element is- If electron = protons…

Q: The element X has three naturally occurring isotopes. The isotopic masses (amu) and % abundances of…

A: Atomic species that have the same atomic number but different mass numbers are called isotopes.  An…

Q: What element am I?  a) In my natural state I am a diatomic element. When I form an ionic compound, I…

A: In an atom, there is nucleus at the centre and electrons are revolving around it. In nucleus, there…

Q: The average atomic mass of hypothetical element 67X (66.9256 amu) and 71X (70.9247 amu) is 68.10…

A: Average atomic mass of an element can be determined as shown below :Avg. mass=mass of isotope 1×its…

Q: On another planet, the isotopes of titanium have the given natural abundances. Mass (u) Isotope 46TI…

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Q: Predict the compound formed between a cesium atom and a sulfur atom. Write it's formula. Classify…

A: Cs is a metal which loose electron  and sulfur is a non metal which gain electron  Cs is 1 group…

Q: What is the average atomic mass of halfnium if, out of every 100 atoms, 5 have mass 176.0, 19 have…

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Q: Abundance = 74.200%, Mass(u) = 45.95263 Abundance = 14.500%, Mass = 47.94795 Abundance =…

A: The atoms of same elements having identical atomic number but have different masses are termed as…

Q: Calculate the number of protons, neutrons, and electrons in 15 g of Si-28. The isotope Si-28 has a…

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

Q: c mass of hy 67X (66.9256 abundances c

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Q: he image shows a representative sample of 5050 atoms of a fictious element, called lemonium (LeLe).…

A: Given: The atomic mass of Le-19 = 19.0134 u The atomic mass of Le-17 = 17.4629 u The atomic mass of…

Q: An element X has two common isotopes: X-57 and X-59. If the average atomic mass of element X is…

A: An element has two isotopes : X-57 and X-59 Average Atomic mass = 58.876 amu

Q: A robot spacecraft returned samples from the planetesimal 98765 ALEKS, located in the outer Solar…

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Q: The positions of two elements, P and Q, in the Periodic Table are shown. P and Q react together to…

A: Reactivity of elements depends on their individual property they react to form stable compound.

Q: 6) Complete the following table by calculating the atomic mass. Isotope Mass of Atom (u) ¹H 2H 12C…

A: we have to calculate the atomic mass of the given elements using the percentage abundance and mass…

Q: * what mass of HCI grams is in required to react with a 60 g ? Al(OH)₂ (s) + 3HC/ (aq) of • A/C/₂…

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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.