2) What is one of the major hazards associated with potassium dichromate?

Q: Why does sodium fluoride have a melting point of 993°C but nitrogen has a melting point of -210°C?

A: Please find your solution below : Melting point of any substance is defined as the temperature at…

Q: Describe the properties of metals that make themuseful for making jewelry.

A: The elements which forms a cation easily is known as metal.

Q: what are the number of unpaired electrons present in Cr^2+,  Fe^3+,  Co^2+ ?

A: The electron configuration of Cr is 1s2 2s2 2p6 3s2 3p6 4s1 3d5.  Removal of two electrons results…

Q: What is lithium?

A: Pure substances that are made up entirely of atoms and have the same number of protons in their…

Q: Why are metals commonly white but copper and gold are colored?

A: Answer - According to the question - Metal are white because  in  smooth surface these metal will be…

Q: Why does a salt compound give off light/a colored flame when burned?

A: When the salts are burned, they are basically provided with the energy  hence the electrons present…

Q: lanthanide ion lan

A: The Horrock's equation is expressed as: q=AkH2O-kD2O-B Where, A and B are the proportionality…

Q: Which three steps need to be taken for the synthesis of elemental transition metals

A: Transition metals Elements that have (or easily create) partially filled d orbitals are known as…

Q: What are the colors of bromine and potassium permanganate?

A: To find: The colors of bromine and potassium permanganate

Q: (a) Why is calcium generally more reactive than magnesium?(b) Why is calcium generally less reactive…

A: a.

Q: Why is titanium metal called as strategic metal? Mention two of its properties which makes it so…

A: Titanium is called strategic metal because it is used for making certain war equipments.   The…

Q: <p>Why is the +2 oxidation state so common for transition metals?

A:

Q: Assign reasons for each of the following :(i) Transition metals generally form coloured…

A: In periodic table, four main blocks are there. These are s block, p block, d block and f block.…

Q: Electrons in a strong magnet....

A: ANSWER

Q: Fluorescent compound

A: Answer: the reaction product of thiochrome  formation is fluorescent compound.

Q: Why is zinc not regarded as a transition element?

A: Transition metal has incomplete d subshell in one or more than one oxidation state.

Q: What is a tetrahedral hole?

A:

Q: why iodine is dark violet in colour?

A: Visible region: The electromagnetic radiation in range of is regarded as visible region which is…

Q: what is difference between Gem dihalide and Gem trihalide?

A: Gem dihalide: Two halide groups are attached to the same carbon atom is called Gem dihalide.

Q: Which types of magnetic materials are used to make permanent magnets?

A: There are various types of the magnetic materials such as paramagnetic material, diamagnetic…

Q: The d-block element among the following is a. Lead Ob. Thorium O C. Helium d. Osmium

A:

Q: Write a short note on biologicalrelevanceof sodiumand calcium

A: The biological relevance of SODIUM: Sodium is found mainly in blood plasma and in the fluid that…

Q: how can you diffrentiate between lanthanides and actinides ?

A: The long form of the periodic table is a tabular arrangement of all known elements. Here the…

Q: Why Mn has lower melting point although it has 5 unpaid electrons in the d orbitals?

A: We know that atomic no. of Mn=25 So it contains 5 electrons in d orbitals and 2 electrons in the s…

Q: 5. What would you predict about the solubilities of beryllium salts and radium salts relative to the…

A: If we compare the solubility of beryllium salts to the other Group IIA metal salts, we will notice…

Q: Why are the results of flame tests for the alkali metal ions difficult to distinguish? (Choose all…

A: Flame test is used to identify the presence of metal ion particularly group 1 metal ions. It is…

Q: Why KMNO, is stored in amber colored bottles?

A: Amber coloured bottles have an ability to filter UV (ultraviolet) radiation thereby protect the…

Q: Tagnesium hitride

A: As it is ionic compound. So name of compound is  magnesium nitride (d) is correct option

Q: The group 10 transition metal in the fifth row of the periodic table:

A: The transition metals are a group of elements that have partially filled d-orbitals. These are…

Q: Use condensed electron configurations to predict the relative hardnesses and melting points of…

A: Condensed electronic configuration is written for elements of higher atomic number. It is written in…

Q: Explain the Shielding and Deshielding Effects ?

A: When the hydrogen atom is surrounded by higher electron density it creates greater opposition to…

Q: What are the colors of CoC12 and CoC12 6H2O and specify the source used?

A: Cocl2 is. A fascinating compound which change colour in response to humidity. As humidity increase…

Q: Sketch the atomic structure of white tin.

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

Q: 4. Why metals are electrical conductors?

A: Metals are good electrical conductors.  because there are free held loose electrons are present in…

Q: Investingate and report the uses of ferromagnetic oxides in magnetic recording tapes

A: Recording tapes have a thin plastic base material and this base have a coating of ferric oxide…

Q: For each of these solids, state whether you would expect it topossess metallic properties: (a)…

A: TiCl4 and  ScN are ionic compounds and delocalization of electrons take place on the individual ions…

Q: Based on Magnesium’s orbital diagram, would Magnesium be attracted to a magnet? Please briefly…

A: The behavior of magnesium towards magnet is explained below.

Q: 2. Why does grapefruit juice left in an open can taste metallic?

A: According to Q&A guidelines of Bartleby, we are supposed to answer only the first question out…

Q: Look at equation 11: If Br,(g) + 2KCI (aq) reacted instead of CI, (g) + 2KBr (aq) could this…

A: Cl2  + 2e- → 2 Cl-     E° = 1.36 VBr2  + 2e- → 2 Br-     E° = 1.09 VBr2 (g) + 2 KCl(aq) → 2Br-  +…

Q: Explain the following observations: (i) Transition elements generally form coloured compounds. (ii)…

A: Elements which have partially or incompletely filled d-orbitals in their ground or stable oxidation…

Q: Write balanced equations for the following reactions chromium(III) oxide with dilute…

A:

Q: 4. What types of bonds, and how many bonds, will arsenic form with other elements?

A: Electronic configuration of arsenic is[ Ar] 3d¹⁰ 4s² 4p³

Q: What are the colors of each glass contains?

A: The glass containers given are,

Q: Why does table salt, NaCl, some times appear yellow in colour?

A: All matter can exist in different physical states; solid, liquid and gases. Solid is well known…

Q: Is bort a diamond?

A: Bort is used as a abrasive coatings for drill bits, grinding wheel and for cutting stones.