Tantalum has an atomic weight of 180 g/mol and density of 16.6 g/c It has a BCC structure. Find the atomic radius of tantalum ( Ta ).

Q: The atoms in the formula 4CH3oH is

A: Atoms are the individual particle that combines with each other to form molecules. These molecules…

Q: sion for Kc for the =2 Cu(s) + Zn2* 1

A: When you want to write Equilibrium expression then please remember that point,    For solid and…

Q: 13,Which element belongs to the inner transition metals? Group of answer choices a, Sm b, Sn c, Sc…

A: To solve this problem first we have to know the inner transition metal and what is a chemical…

Q: MCQ 118: In the Periodic table, the Alkaline earth metals are found in A. Period II B. Period III C.…

A: Ans C) group 11

Q: Which element is a main-group metal with an evenatomic number? (a) K (b) Ca (c) Cr (d) Se

A: The main group metal with an even atomic number has to be given,

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

A:

Q: Periodic Table of the Elements CI Mn Te I Xe lodine would have chemical properties most like which…

A: This is the long form of the periodic table which consists of horizontal rows called periods and…

Q: Differentiate between Atomic and Ionic Radii?

A: The difference between Atomic and Ionic Radii have to be given below.

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: What does the crystalline structure of metals resemble?     A   Repetition of the metals neutrons…

A: The metals are electropositive and they lose electrons very easily. After the removal of electrons…

Q: .85 If one gallon of gasoline contains about 2.0 g of lead, how much lead (in kg) is emitted into…

A: This is a pure logic question. Let us take the information given first. 25 miles - 1 gallon It…

Q: Determine the balanced reaction of element A (white circles) with element B (gray circles) as…

A: In the given problem, Element A with white circles is diatomic molecule, therefore it will be…

Q: 1. NH&CI 2. Fe(NOs)b 3. TIBra 4. CusP 5. SnSez 5. GaAs 7. Pb(SO4)2 3. Be(HCOS)2 . Mnz(SO3)3, 0.…

A: For binary ionic compounds i.e, the compounds containing only two types of elements.  Then the…

Q: 2.) What is the number of free electrons per copper atom? Assume a density of 8.9 g/cm3 and an…

A: Here, in this question we have to calculate the number of free electron in copper atom. according to…

Q: Determine the balanced reaction of element A (white circles) with element B (gray circles) as…

A: In the given problem,Element A with white circles is diatomic molecule, therefore it will be…

Q: Protons and neutrons have Mass .......... .... wwwww less O equal O high O Other O specific metal…

A: Atomic weight = 180gm/mole Density =16.6 gm/cm^3 ->it is BCC structure.

Q: Which two of these elements would you expect to show the greatest similarity in chemical and…

A: The elements which are expected to show the greatest similarity in chemical and physical properties…

Q: Which pair of elements below should be the most similar in chemical properties?   Cs  ,  He I…

A: If element belong to same group then it's chemical properties is mostly same.

Q: a. Describe the differences between an a particle, a ß particle, and a y ray. Which has the greatest…

A: In radioactive decay, an unstable isotope is converted into stable isotope with emission of α…

Q: The atomic radius is half the distance between the nuclei of two joined atoms إختر واحداً: ibs

A: Choose that given statement is true or false?

Q: Which will form an ion with a +2 charge? A. S B. Br C. Ba D. Cs

A: We have to predict the element which will form ion with +2 charge.

Q: Place these atoms in the order of increasing atomic radii: Ca, Mg, P, and Cl. a. Cl < P < Mg < Ca…

A:

Q: 9: Which of the following is an alkali metal? A) Zr B) Rb C) Cs D) Te 10: The symbols for Potassium,…

A:

Q: The chemical formula of table salt, NaCl, tells us what about the atomic bonding of this molecule? a…

A: In the molecular formula, the subscript written next to the atom represents the number of that atom…

Q: Which of the following radii comparisons is incorrect? A) Sr Se E) Sn > Sn*

A:

Q: 1) Br, + LIF→ _LiBr+__F, LiBr + 2) H,PO, + Fe(OH), > H,0 + Fe, (PO,), 3) С,Н, ОН + CO, + H,0

A:

Q: m b d Halogens Alkali Metals Alkali Earth Metals Noble Gases a. b. c. d. Inert. Do not react with…

A: The periodic table contains different elements arranged in the group and periods . The group one of…

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

A: At first, we have to find the value of edge length from the crystal density formula, then, radius .…

Q: Q2 : Ve NA Calculate the density of the following metals. Atomic weight A (g/mol ) Atomic radius…

A:

Q: It is the first series in the periodic table NS. Iongest chains B - the shortest chains C-a series…

A: The periodic table contains all of the existing elements. In the periodic table, elements are…

Q: Which equation correctly represents the first ionization of calcium? Group of answer choices Ca (g)…

A:

Q: Identify which of the following atoms would have the largest radius. A) Mg B) Mn C) Ba D) Bi E) Br

A: As we move from left to right in a period then radii decreases. As we move from top to bottom then…

Q: Why we need to detrimine the concentration of trace elements?

A:

Q: Describe the contribution of the following scientist in the development of the periodic table -John…

A:

Q: Of the elements listed below, which one would be a poor conductor of heat and electricity? a) Mg b)…

A: Which element among the following Mg, CS, Se, Sn &amp; Zn   is poor conductor of heat and…

Q: Some common ions based on metals are Select one: 3+ 2+ 2+ а. Li Ag Ва 4+ 2+ b. Fe, Ba Ва Al 2+ 2+ c.…

A: The question is based on the concept of periodic properties . We have to identify which of the metal…

Q: The total number of atoms in 2CaCI

A:

Q: O/ Nickel has a density of 9.05 gm/cm Take the structure of a faceted center cube. Calculate the…

A: Density of Nickel = 9.05gm/cm3 Molar mass of nickel = 59g/mol Number of atoms in face centered cube…

Q: It the type of energy that happens in the core of the atom   a. solar b. thermal c. nuclear d.…

A: Solar as the name suggest energy that come from heat and light of sun.

Q: An oxide of phosphorus with Mr = 283.88 contains 43.64% of phosphorus by mass. The MOLECULAR FORMULA…

A: Given that an oxide of phosphorus has 43.64% of phosphorus by mass. Considering 100% of the oxide…

Q: H–B=c=o, Boron SN: Carbon SN:

A: Given molecule 1. H-B=C=O 2. O=C=B-B=C=O Steric No of B = To be determined Steric No of C = To be…

Q: An unknown metal forms a BCC structure with its side length of 2.884 Å. What is the atomic weight of…

A:

Q: A sample of iron sulfide is found with the formula Feo.87S. VWhat percentage of the iron ions are…

A: Co-ordination compounds are formed when the metal ion is bonded to the ligand which donates its…

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

A:

Q: Hydrogen sulfide is a gas with the odor of rotten eggs. The gas can sometimes be detected in…

A:

Q: Which of the following atoms has the largest radius? a) F b)Cl c)Li d) Na

A: Which of the following atoms has the largest radius?  a) F b)Cl  c)Li d) Na

Q: How many atoms are there in FCC? Select one: a. 2 b. 4 c. 6 d. 5

A: Given,  The number of atoms present in FCC is:

Q: 15. What is the formula for a compound formed from aluminum and oxygen? a. Al302 b. Al204 C. Al303…

A:

Crystal Structures

Solids are present all around us. They have different properties and applications. Diamond and graphite are two well-known solids. Diamond is the hardest material in the world and is used in making jewelry. Graphite on the other hand is soft. The lead of your pencil is graphite. Why are they so different in appearance and properties despite the fact they are chemically the same? Both are allotropes of carbon. The answer lies in the structure, the way constituent particles are arranged in the solids.