Q/Choose between parentheses 1-if the density of an element 6 mg/ml with volume 1.8 L, its mass will be ...... g * (3.33 / 0.00108 / Non of these /0.0033 / 10.8)

Q: Do both members of the following pairs have the samenumber of protons? Neutrons? Electrons?(a)¹⁶₈O…

A:

Q: 4. What are the main ideas in the nuclear theory of the atom?

A: The main ideas of nuclear theory of an atom has to be given. The atomic model of Rutherford is also…

Q: ormat Slide Arrange Tools Layout Transition Background Theme I IRIQ III . 2 ... .a II .4 .I..…

A: Solution- 1. The iron have 30 neutrons  Becuase atomic mass - no of proton or electrons or atomic no…

Q: Please calculate, how many atoms exist in 1cm^3 of copper with the density 8,93 gr/cm^3 and the…

A: 1 cm3 of copper with the density 8.93 g/cm3, whose number of atoms is to be determined.

Q: 28. I A certain element consists of two stable isotopes. The first has an atomic mass of 137.9068…

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Q: a. How many neutrons are in K-41?b. Write the electron configuration for potassium.c. Which is the…

A: The electron, proton, and neutrons are known as the subatomic particles present in the nucleus of an…

Q: d11 (pm) 7A BA 1A 3A 4A SA 6A 152 112 05 75 73 72 186 160 143 118 110 103 100 98 227 197 135 122 120…

A: In the given question we have to tell the reason why the atomic radius increases as we move down the…

Q: and 2 (At Hom ise 2.107 25 of 27 I Review | Constants | Periodic Table ef uses a bag of sand to…

A: Step → Since,       mass = density×volume

Q: Which statement is true?(a) For a given element, the size of an isotope with more neutrons is larger…

A: For a given element, atoms having same atomic number with different mass number are known as…

Q: In which ways can isotopes differ? Select all the possible ways. C a. Size b. Atomic Number c.…

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Q: Calculate the atomic mass of the element: Mass                Abundance 22.1760             45.00%…

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Q: 55. Which elements are main-group elements?(a) Te(b) K(c) V(d) Re(e) Ag

A: The main- group elements are the elements in the s-block and p-block of the modern periodic table…

Q: Which of the following is False?a. An element is defined by its atomic number.b. Ninety-two elements…

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Q: Ivume: Density of Group 14 Element s Sn Pb 9.15g mass of element 27.11g 44.30g volume of H20 alme…

A: Volume of metal = (Volume of water+ element - Volume of water) Density = Mass / Volume

Q: 2. 10 5 Consider the element with the electron configuration [Kr]5s 4d 5p. This element is Select…

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Q: Which particle diagram represents a mixture of three substances? * 1 point Key O = an atom of one…

A: option 2  here in this image , there are 3 different types of molecules 1) two atoms of one element…

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

A: Given that Isotope Mass (amu) Relative Abundance 100Ru 99.9 48% 99Ru 98.9 52%   To…

Q: what is the diameter of the “atom” with a nucleus this size?

A:

Q: A rough estimate of the radius of a nucleus is provided by the formula r 5 kA1/3, where k is…

A: The given radius is: where k is the Fermi constant (1.3×10-13cm) and A is the mass no. of Iodine…

Q: The mass of a cesium (Cs, atomic number 55) atom is 2.21×10−25 kg, and its radius is R = 2.65×10−10…

A: An atom can be considered as the smallest unit of any matter. An atom is composed of certain…

Q: Determine the percent abundance for J-67 and J-68, given the following data: The average atomic mass…

A: The average atomic mass of the element J is 65.96amu.   Let the abundance of  J-68  is M %.…

Q: The first member of a group in the Periodic Table of elements always shows some abnormal chemical…

A: Group is a column in a periodic table and in the first element in the column is the first member of…

Q: 2.34 Describe Thomson's model of the atom. How might it ac- count for the production of cathode…

A: Thomson's model of atom is also known as plum pudding model. According to plum pudding model, atom…

Q: Does any element with ZS 92 match the description? If you checked yes, give the symbol of an element…

A: The question is based on the concept of periodic table. we have to identify whether element exist…

Q: Which of the following refer to elements in D-block? O Inner transition metals O Metalloids O…

A: A transition metal can be defined as any element in the periodic table, which includes groups 3 to…

Q: what group in the periodic table would an element with atomic number 112 belong?

A: • We need to determine the group in the periodic table would an element with atomic number 112…

Q: Determine the missing physical properties for eka-A. Element •Element A melting point (°C) N/A…

A: Eka-A is eka-aluminium which is replaced by Gallium.

Q: an atom has mass no of 64, calculate radius of nucleus of this atom?

A: The radius of a typical nucleus in terms of number of nucleons is given by

Q: To how many significant figures would you need to express the mass of an thorium-228 atom in amu to…

A: Isotopic mass of thorium-228 is 228.0287411 amu Rest mass of an electron in amu = 0.00054858 amu

Q: A biochemist who is studying the properties of certain sulfur (S)–containing compounds in the body…

A: Periodic table represents the systematic arrangement of elements in which the properties of these…

Q: ealt Wsth mehs A mystery element is in the same period as Gallium (Ga). It has a smaller atomic…

A: The top elements of the reactivity series are highly reactive metals.

Q: If the heaviest isotope (A) is more abundant and the other isotopes (B & C) were less abundant,…

A: The periodic table's atomic mass is the average weight of all its isotopes. Average atomic mass of…

Q: enerqy of J of on at 3465 m/s. The mass of Colculate the kinetic electron moving ot 3965 m/s.The…

A:

Q: 01. Find "x" in the following Dobereiner triad: Element Ca Sr Ba P.A 40 x 138 a) 88 b) 89 c)…

A: 01. Find "x" in the following Dobereiner triad:Element Ca Sr BaP.A 40 x 138 Ans = b) 89…

Q: Determine the percent abundance for J-67 and J-68, given the following data: The average atomic mass…

A: Isotopes which have same  number of protons but different number of neutrons.

Q: d) how many 4°K atoms are present in a piece of copper block weighing 615 g? The percent isotope…

A: 12. d) The mass of the copper block is = 615 g The percent of 40K isotope is = 12.05 % The number of…

Q: In a sample of any metal, spherical atoms pack closelytogether, but the space between them means…

A: (a) The mass of an Iridium atom is 192.22 amu. The radius of an Iridium atom is 1.36 A. Consider the…

Q: Describe the basics of atomic structure, including ions and isotopes; and then how each of these…

A: Atomic structure refers to the structure of an atom comprising a nucleus (centre) in which the…

Q: The negative muon (μ−) behaves like a heavy electron, with the same charge as the electron but with…

A: We have a system consisting of a nucleus of platinum (Pt195 with 78 protons and 117 neutrons) and…

Q: 4. Propose an explanation for the observation that elements with even atomic numbers are more…

A: "Since there are multiple questions and it is not mentioned that which one has to be solved so I am…

Q: 2. (a) Determine the mass number of a nucleus whose radius is approximately equal to two-thirds the…

A: Radius of new element is two third of the radius of Ra-230. Here, we have to find the name of new…

Q: 5 Elements are -  1) Sodium. 2) potassium 3) calcium 4) magnesium 5)lithium  Rank them from 1…

A: A question based on biological importance of chemical elements that is to be accomplished.

Q: Fill in the blanks to complete the following table.   Row Element Name Element Symbol Atomic…

A: Element name in rows are: Row 1:  Ag is the symbol for silver, with atomic number 47. Hence, element…

Q: 2. An element that has 9 orbitals 5 fully filled, 2 single electrons and 1 empty orbital (a) What is…

A: f) Mg is a metal and can easily lose two electrons. It have properties similar to group 2 elements…

Q: 6) What are the circular paths around the nucleus where electrons revolve? 7) There is an X element…

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

Q: unisauaPIAL :ua ar Number of Neutrons Number of Abundance Abundance Name of isotope Mass (amu) (%)…

A: Mass number is sum of protons and neutrons in a nucleus.

Q: 11. Complete the following table by filling in the number of electrons in the last column and by…

A:

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.