What kind of elements generally form coloured compounds?

What kind of elements generally form
coloured compounds?
by

1 Answer

Answer :

Transition metals
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Related questions

Explain the following , giving reason . (a) Transition metal and many of their compounds show paramagnetic behavior (b) The enthalpy of atomisation of the transition metal is high . (c) The Transition metal generally form coloured compounds .

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Last Answer : Ans(a) It is due to unpaired electrons . (b) It is due to strong metallic bond and additional Covalent bonds due to presence of unpaired electron in d- orbitals (c) It is due to presence of unpaired electrons ,they undergo d-d transition . 

Why are transition metals and there compounds generally coloured ?

Description : Why are transition metals and there compounds generally coloured ?

Last Answer : Ans It is due to present of unpaired electrons in transition metals and their ions , that is why they absorbed light from visible region and undergoes d-d transition and radiate complementary colour . 

Give scientific reason of the following : a) Colour blindness is more common in men than in women b) Light coloured clothes are generally worn in summer c) A person is hurt more when he falls on hard ground than on soft d) Deforestation causes more floods e) The man-hole covers are generally round

Description : Give scientific reason of the following : a) Colour blindness is more common in men than in women b) Light coloured clothes are generally worn in summer c) A person is hurt more when he falls ... ground than on soft d) Deforestation causes more floods e) The man-hole covers are generally round

Last Answer : a) Colour blindness is more common in men than in women Women have the sex chromosomes XX, while men have the chromosomes XY. The gene for normal colour vision is found on the X- ... of flowing water. When these trees are cut the natural barriers ultimately vanish and more floods are caused

Consider following properties of the noble gases. I. They readily form compounds which are colourless. II: They generally do not form ionic compounds.

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In the case of peppered moth (Biston betularia) the black-coloured from became dominant over the light-coloured form in England during industrial revo

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Sulphide ion reacts with `[Fe(CN)_(5)NO]` to form a purple coloured compound (X). In this reaction oxidation state of iron .

Description : Sulphide ion reacts with `[Fe(CN)_(5)NO]` to form a purple coloured compound (X). In this reaction oxidation state of iron .

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In Borax bead test, metal oxides react with `B_(2)O_(3)` and form a coloured bead. This bead contains

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In the case of peppered moth (Biston betularia) the black-coloured from became dominant over the light-coloured form in England during industrial revo

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In the case of peppered moth (Biston betularia) the black-coloured form became dominant over the light-coloured form in England during industrial revolution. This is an example of (a) appearance of the darker coloured individuals due to very poor sunlight (b) protective mimicry (c) inheritance of darker colour character acquired due to the darker environment (d) natural selection whereby the darker forms were selected.

Description : In the case of peppered moth (Biston betularia) the black-coloured form became dominant over the light-coloured form in England during industrial revolution. This is an example of (a) ... acquired due to the darker environment (d) natural selection whereby the darker forms were selected.

Last Answer : (d) natural selection whereby the darker forms were selected.

Which of the following elements react with metals to form their binary compounds exhibiting `-3` oxidation state ?

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Which of the following elements react with metals to form their binary compounds exhibiting `-3` oxidation state ?

Description : Which of the following elements react with metals to form their binary compounds exhibiting `-3` oxidation state ?

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The chemical reactivity of noble gases involves the loss of electrons and hence it can form compounds with highly electronegative elements like F and

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The chemical reactivity of noble gases involves the loss of electrons and hence it can form compounds with highly electronegative elements like F and

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Last Answer : The chemical reactivity of noble gases involves the loss of electrons and hence it can form compounds with highly ... D. `sp^(3)d^(2)` & 2

The chemical reactivity of noble gases involves the loss of electrons and hence it can form compounds with highly electronegative elements like F and

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Last Answer : The chemical reactivity of noble gases involves the loss of electrons and hence it can form compounds with highly ... A. zero B. 2 C. 6 D. 8

What elements will always form ionic compounds in a 12 ratio with zinc.?

Description : What elements will always form ionic compounds in a 12 ratio with zinc.?

Last Answer : Need answer

IN which set do all elements tend to form anions in binary ionic compounds Question 3 options N S I Ca B K K Ga Pb Fe Hg Na?

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Which element under normal circumstances does not combine chemically with other elements to form compounds?

Description : Which element under normal circumstances does not combine chemically with other elements to form compounds?

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Two elements which can form a large number of compounds are (1) Carbon and Hydrogen (2) Carbon and Nitrogen (3) Carbon and Oxygen (4) Carbon and Sulphur

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Last Answer : (1) Carbon and Hydrogen Explanation: The carbon-hydrogen bond (C-H bond) is a bond between carbon and hydrogen atoms that can be found in many organic compounds. Compound classes ... bonds are alkanes, alkenes, alkynes, and aromatic hydrocarbons. Collectively they are known as hydrocarbons.

Those substances which have so far not been resolved by any means into other substances of simpler form are called  A. elements  B. compounds  C. atoms  D. molecules

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Last Answer : Answer: A

Two elements which can form a large number of compounds are (1) Carbon and Hydrogen (2) Carbon and Nitrogen (3) Carbon and Oxygen (4) Carbon and Sulphur

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(a) Show on a diagram the transfer of electrons between the atoms in the formation of MgO. Write symbols of cation and anion present in MgO. (b) Name the solvent in which ionic compounds are generally soluble. (c) Why are aqueous solutions of ionic compounds able to conduct electricity? -Chemistry

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Pick out the wrong statement. (A) Molecules with symmetrical arrangements (e.g. CH4 or CCl4) are non polar (B) Generally, non-polar compounds are chemically inactive, conduct electricity poorly and do not ionise (C) Most of the hydrocarbons are non-polar (D) None of these

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Aromatic compounds are generally derived from what substance?

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Members of which of the following classes of compounds generally produce acidic solutions when dissolved in water? w) metal oxides x) nonmetal oxides y) alcohols z) aldehydes

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Why do a lot of asian people from Pakistan/India have interestingly coloured eyes?

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In cold countries alcohol is preferred to mercury as a thermometric liquid because (a) alcohol is a better conductor of heat (b) alcohol can be coloured and its level seen easily (c) alcohol has a lower freezing point than mercury (d) alcohol is cheaper than mercury

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Haemoglobin is 1. The colouring matter of leaves of plants 2. The colouring matter of blood 3. A compound that is highly coloured 4. A compound that contains iron The correct answers are: (a) 1, 2 and 4 (b) 2, 3 and 4 (c) 1, 2, 3 and 4 (d) 1, 2 and 3

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Which gas is used in the multi - coloured display signs seen at night?

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The red coloured pigment in 'sindur'?

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Red coloured glass is prepared by adding

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Blue coloured glass is prepared by adding

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Green coloured glass is prepared by adding

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Yellow coloured glass is prepared by adding

Description : Yellow coloured glass is prepared by adding

Last Answer : ferric compounds.

How is coloured glass prepared?

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Last Answer : Soda-lime glass is colourless. To make coloured glass, certain metal compounds are added. Metallic compound Colour imparted Ferrous & Chromium compound Green Ferric compound Cobalt compound Nickel salts or cuprous compounds Yellow Blue Red

Which of the following coloured light has the least speed in glass prism? (a) Violet (b) Yellow (c) Red (d) Green

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A green coloured solid compound ̳X‘, gets oxidized to reddish brown solid in presence of air. ̳X‘ on heating gives brown coloured solid ̳Y‘ and two pungent smelling gases ̳A‘ and ̳B‘. ̳A‘ turns acidified potassium dichromate solution green. Name ̳X‘, ̳Y‘, ̳A‘ , ̳B‘ and type of Reaction. (a) CuSO 4 , CuO, SO 2 , SO 3 , decomposition (b) FeSO 4 , Fe, SO 2 , SO 3 , decomposition (c) FeSO 4 , Fe 2 O 3, SO 2 , SO 3 , decomposition (d) FeSO 4 , Fe 2 O 3 , SO 3 , SO 2 , decomposition

Description : A green coloured solid compound ̳X , gets oxidized to reddish brown solid in presence of air. ̳X on heating gives brown coloured solid ̳Y and two pungent smelling gases ̳A and ̳B . ̳A turns acidified potassium ... , SO 3 , decomposition (d) FeSO 4 , Fe 2 O 3 , SO 3 , SO 2 , decomposition

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Your Thoughts About Coloured Money?

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Last Answer : answer:Harder to counterfeit. Looks pretty.

Where can I buy plain coloured, medium sized, Skull Candy headphones in the UK?

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Last Answer : I’m not 100% positive but try these http://www.skullcandyuk.com/stockists.php

Is there a design format that allows you to place a logo in Word on a coloured background, without a white box around the logo?

Description : Is there a design format that allows you to place a logo in Word on a coloured background, without a white box around the logo?

Last Answer : I was going to recommend .gif or .png, until I realized you had tried that. I'm not sure why .gif and .png don't work, because they do for me. Are you sure transparency exists in the ... format picture tools and set a transparent color (note that it will take out that color everywhere in the logo).

tips of cedar trees rust coloured throughout

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I'm flat. You use me everyday. You need me to live. But you give me away everyday. I'm coloured and I have a founding father on me. What am I? -Riddles

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Last Answer : A bill.

If I am coloured, I smell, if I am burned, I smell, orange and yellow will melt me. What am I? -Riddles

Description : If I am coloured, I smell, if I am burned, I smell, orange and yellow will melt me. What am I? -Riddles

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I am a window, I am a lamp, I am clouded, I am shining, and I am coloured; set in white, I fill with water and overflow. I say much, but I have no words. What am I? -Riddles

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Mary wants to decorate her ********* tree. She wants to place the tree on a wooden block covered with coloured paper with picture of Santa Claus on it. -Maths 9th

Description : Mary wants to decorate her Christmas tree. She wants to place the tree on a wooden block covered with coloured paper with picture of Santa Claus on it. -Maths 9th

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Radha made a picture of an aeroplane with coloured paper as shown in figure. Find the total area of the paper used. -Maths 9th

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Name the following: (a) A metal, which is preserved in kerosene. (b) A lustrous coloured non-metal. (c) A metal, which can melt while kept on palm. (d) A metal, which is a poor conductor of heat. -Chemistry

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Which cells of the retina enable us to see coloured objects around us? -Biology

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Last Answer : answer:

Assertion `:` Faeces are brown coloured. Reason `,` Faeces contain brown pigment named sterocobilin formed by reduction of bile pigment.

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