The radius of a tantalum atom is 142 pm. How many tantalum atoms would have to be laid side by side to span a distance of 2.85 mm?

Q: Assuming that the shape of atoms is spherical, what is the diameter (in angstroms) of an atom that…

A: A multiple choice question based on atomic structure, which is to be accomplished.

Q: 5 g of anhydrous strontium nitrate is added to a beaker and exposed to the air. After several hours…

A: The percentage of water in hydrated sample is given as : Percentage of water = ( mass of water /…

Q: List the name and the atomic number of each element. (a) Mn(b) Ag(c) Au(d) Pb(e) S

A: In the periodic table, elements are arranged based on their similarities in properties. Each element…

Q: An atom of rhodium (RhRh) has a diameter of about  2.7×10−8cm2.7×10−8cm. What is the radius of a…

A: The radius of an atom is half of its diameter. 1 Å = 10−8 cm

Q: Calculate the density for Zinc Using the atomic mass of Zinc and dimensions of 3.5mmx 2.5mm x 2.5mm

A: Given  Dimension =  3.5 mm × 2.5 mm × 2.5 mm Density = ?

Q: 7. Is matter usually charge-neutral? How would matter be different if it were not charge-neutral?

A: Matter is neutral since they have equal number of protons(positively charged) and electrons…

Q: The Group 1B metals, Cu, Ag, and Au, are calledcoinage metals. What chemical properties make…

A: The chemical properties of Group 1B metal that makes them suitable for making coins and jewelry has…

Q: The radius of a strontium atom is 215 pm. How many strontium atoms would have to be laid side by…

A: Diameter = 2 X Radius

Q: Calculate the radius in nanometers of a metallic atom given that it has a BCC structure and a…

A: Density = 12.81 g/cm3  Atomic Weight M = 110.9 g / mol  Avogadro number NA = 6.022 * 1023 atoms /…

Q: A general chemistry student found a chunk of metal in the basement of a friend’s house. To figure…

A: The question is based on the concept of density. density is an intensive property of the substance…

Q: atoms

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Q: Transition metals are good conductors of electricity because of their sea of electrons Oability to…

A: (1). Substances through which heat and electricity can easily pass are called conductors. For…

Q: Calculate the radius in nanometers of a metallic atom given that it has a BCC structure and a…

A: Please find your solution below :

Q: A hydrogen atom, which has one electron, has a radius 0.7 x 10-10 m. The radius of its nucleus is…

A: Atomic number of hydrogen atom is 1 and consists one proton in the nucleus. And one electron is…

Q: By one estimate, an electron travels around the nucleus of an atom at a speed of 1.50 x 10^6 m/s.…

A: A) To change m/sec into km/Hr we multipy 18/5 1.5×106×18/5= 5.4×106km/hr

Q: The volume of a single tungsten atom is 1.07 x 10-23 cm³. What is the volume of a tungsten atom in…

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Q: Give the name of the elements in each group of three element symbols. a. Au, At, Ag b. N, Na, Ni c.…

A: The name of the given element symbols in each group has to be given.

Q: Determine the number of atoms in 1.85×10^-3L of Mercury. [The density of mercury is 13.5g/mL.]

A:

Q: The radius of a rhodium atom is 134 pm. How many rhodium atoms would have to be laid side by side to…

A: We have to calculate the number of rhodium atoms.

Q: The transparent form of beryl (molecular formula = BegAl2Si6O18) that is green is called emerald.…

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Q: Last, need help with question Number 5

A:

Q: (a) The electrostatic force (not energy) of attraction betweentwo oppositely charged objects is…

A:

Q: 2b. A student formulates the following hypothesis: "If phosphorus were to form a positive ion, P**,…

A: The atomic radius of an element is provided as the distance between the center of the nucleus and…

Q: A new compound has the empirical formula GaCl2. Thissurprises some chemists who, based on the…

A: The empirical formula of new compound is s GaCl2 . Since gallium is belongs to group 13, it exhibit…

Q: A +1 n=1 D n=2 n=3 n=4 n=5 n=6

A: We know that red colour has highest wavelength so it has lowest energy

Q: Locate each of the following elements in the periodic table;give its name and atomic number, and…

A: Metals are those substances or minerals which forms naturally below the surface of the earth. They…

Q: Locate each element in the periodic table and classify it as a metal, nonmetal, or metalloid. a.…

A: Titanium belongs to group 4 and is present in d block. It is a metal. Chlorine belongs to group 17…

Q: What is the chemical element? X

A: Here we have asked about the information for the chemical element 'X'. We can tell about this as…

Q: How do you expresse the volume in cubic angstroms when the atomic radius is 1.76?

A: Given: Atomic radius = 1.76 Ao Note: As, type of unit cell is not mentioned. We are considering a…

Q: Con The gold fol Rutherford used in his scattering experiment had a thickness of approximately 4103…

A: Given: Diameter of a single atom = 2.9 x 10-8 cm Thickness of a gold foil = 4 x 10-3 mm = 4 x 10-4…

Q: The radius of a barium atom is 217 pm. How many barium atoms would have to be laid side by side to…

A: Given that,radius of barium atom = 217 pm distance between one atom to another = 2.78 mm 1m = 1x1012…

Q: B C +1 n=1 D n=2 n=3 n=4 n=5 n=6 O A O B O C O D

A: Use formula from Bohr model to find energy- E = -2.17×10-18[(1/nf)2-(1/ni)2 ] Where nf is the…

Q: The element Neptunium has a density of 19.60 g/ml. What is the radius of a sphere of this material…

A: Given: Density = 19.60 g/ml = 19.60 g/cm 3 Mass of sphere =70 kg= 70 x 1000 =70000 g  Because one…

Q: Determine the volume ton = 2205 Ibs, 1 lb 1 %3D %3D

A: Given mass of Cupper=2.2g Density =8.96g÷cm3 Volume =mass÷density Volume= 2.2÷8.96= 0.24cm3…

Q: What is the symbol of the element in Group 4A(14) and Period 2?

A: Given,  Group number of the element = 4A that is 14  And  Period number of the element = 2  What is…

Q: Who was the first scientist to classify elements according to their properties?

A: There are over hundreds of elements known to us. To avoid confusion, scientists need to classify…

Q: Calculate the radius in nanometers of a metallic atom given that it has a BCC structure and a…

A:

Q: Calculate the radius in nanometers of a metallic atom given that it has a BCC structure and a…

A: The density of a substance is related to the mass of the substance (M) and the volume (V) as…

Q: The distance between two atoms was determined to be 11.4 nm. What is this distance in centimetres?…

A: Distance is measured in different units. For example nanometre (nm), picometre (pm), centimetre…

Q: Which statements are true? A. There are 11 elements represented in the periodic table by letters…

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Q: Is a carbon atom microscopic or macroscopic?

A: Ans

Q: Calculate the radius in nanometers of a metallic atom given that it has a BCC structure and a…

A: Given information, Density (d) = 12.63 g/cm3 Atomic weight (M) = 107.13 g/mol NA = 6.022*1023…

Group 14 Elements

The following elements come under group 14 of the periodic table.