Is sodium more reactive than strontium?

Is sodium more reactive than strontium?
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The green colour seen in firework displays is due to the chloride salt of– (1) Sodium (2) Strontium (3) Barium (4) Calcium

Description : The green colour seen in firework displays is due to the chloride salt of– (1) Sodium (2) Strontium (3) Barium (4) Calcium

Last Answer : (3) Barium Explanation: The red, orange, yellow, green, blue and purple colors exploding in the night sky during a pyrotechnic festival are created by the use of metal salts. Barium chloride ... orange), sodium nitrate (yellow), barium chloride (green fireworks) and copper chloride (blue fireworks).

The green colour seen in firework displays is due to the chloride salt of : (1) Sodium (2) Strontium (3) Barium (4) Calcium

Description : The green colour seen in firework displays is due to the chloride salt of : (1) Sodium (2) Strontium (3) Barium (4) Calcium

Last Answer : Barium

why sodium is less reactive than potassium?

Description : why sodium is less reactive than potassium?

Last Answer : Ans. The ionization enthalpy of potassium is less than that of sodium and the electrode potential of Potassium (-2.95 V) is more negative than that of sodium (-2.71 V) and hence sodium is less reactive than potassium.

Which of the following is very reactive and kept in kerosene? (1) Sodium (2) Potassium (3) Iodine (4) Bromine

Description : Which of the following is very reactive and kept in kerosene? (1) Sodium (2) Potassium (3) Iodine (4) Bromine

Last Answer : (1) Sodium Explanation: Sodium is a very reactive metal. It reacts vigorously with oxygen and water. A lot of heat is generated in this process. Therefore, it is stored in kerosene to avoid contacts between either atmospheric oxygen or water.

Which of the following halides is least reactive in an E2 reaction with sodium methoxide? (a) (CH3)3CCH2I (b) (CH3)2CHCHICH3 (c) (CH3)2CHCH2Br (d) (CH3)2CHCH2Cl

Description : Which of the following halides is least reactive in an E2 reaction with sodium methoxide? (a) (CH3)3CCH2I (b) (CH3)2CHCHICH3 (c) (CH3)2CHCH2Br (d) (CH3)2CHCH2Cl

Last Answer : (CH3)3CCH2I

Which of the following halides is most reactive in an E2 reaction with sodium methoxide? (a) (CH3)3CCH2I (b) (CH3)2CHCHICH3 (c) (CH3)2CHCH2Br (d) (CH3)2CHCH2C

Description : Which of the following halides is most reactive in an E2 reaction with sodium methoxide? (a) (CH3)3CCH2I (b) (CH3)2CHCHICH3 (c) (CH3)2CHCH2Br (d) (CH3)2CHCH2C

Last Answer : (CH3)2CHCHICH3

Which of the following is very reactive and kept in kerosene? (1) Sodium (2) Potassium (3) Iodine (4) Bromine

Description : Which of the following is very reactive and kept in kerosene? (1) Sodium (2) Potassium (3) Iodine (4) Bromine

Last Answer : Sodium

This natural fiber obtained from the stems of a plant of the nettle family has found popularity in modern fibers with a high wet strength, absorbent but dries quickly, it can be spun or woven, has a high rot and mildew resistance and elasticity 50 percent greater than that of CHEM-92; Multiple Choice: What transuranic element is often used in satellites as a source of heat or power? w) Plutonium-238 x) Strontium-90 y) Cesium-137 z) Uranium-235

Description : This natural fiber obtained from the stems of a plant of the nettle family has found popularity in modern fibers with a high wet strength, absorbent but dries quickly, it can be spun or woven, has a high rot ... a source of heat or power? w) Plutonium-238 x) Strontium-90 y) Cesium-137 z) Uranium-235

Last Answer : ANSWER: W -- PLUTONIUM-238

What is the half-life of the Rubidium-87 / Strontium-87 decay chain?

Description : What is the half-life of the Rubidium-87 / Strontium-87 decay chain?

Last Answer : http://answers.yahoo.com/question/index?qid=20091020104308AAsZVxB Rb 87 half life = 5*10^11 years Sr 87 half life = 2.83 hours

What are the signals of strontium ?

Description : What are the signals of strontium ?

Last Answer : Signal of Sr Stronsium

What is the chemical sign of strontium?

Description : What is the chemical sign of Strontium and what are the main properties of this substance? Maybe you can write something about the use of Strontium?

Last Answer : The chemical sign of strontium Sr. Main properties of strontium: Electronic structure: [Kr] 5s2 Number: 38 Atomic mass: 87.62 u 0.01 u Number of electrons per shell: 2,8,18,8,2 Melting point: ... is also used to train lead. Used as a red dye in fireworks. It is also used in marine aquaristics. 

Strontium - 90 can enter human body parts in place of

Description : Strontium - 90 can enter human body parts in place of

Last Answer : Strontium - 90 can enter human body parts in place of A. Phosphorus B. potassium C. Calcium D. Sodium

Strontium - 90 can enter human body parts in place of

Description : Strontium - 90 can enter human body parts in place of

Last Answer : Strontium - 90 can enter human body parts in place of A. Phosphorus B. potassium C. Calcium D. Sodium

What is the ratio of strontium to sulphate in Arabian sea?

Description : What is the ratio of strontium to sulphate in Arabian sea?

Last Answer : Need answer

What is the number of valence of electrons of strontium?

Description : What is the number of valence of electrons of strontium?

Last Answer : 2

Is strontium natural or synthetic?

Description : Is strontium natural or synthetic?

Last Answer : Strontium is a natural chemical element.

Why do calcium and strontium have the same chemical properties?

Description : Why do calcium and strontium have the same chemical properties?

Last Answer : Both are situated in the group 2 of the Periodic Table.

What is Strontium Hydrogen Carbonate formula?

Description : What is Strontium Hydrogen Carbonate formula?

Last Answer : Feel Free to Answer

If a graph represents the decay of strontium 90 in an igneous rockwhat event occurred at 0 years on the horizontal axis?

Description : If a graph represents the decay of strontium 90 in an igneous rockwhat event occurred at 0 years on the horizontal axis?

Last Answer : What is the answer ?

Is Strontium is Shiny?

Description : Is Strontium is Shiny?

Last Answer : What is the answer ?

What kind of bond would you expect atoms strontium and iodine to form?

Description : What kind of bond would you expect atoms strontium and iodine to form?

Last Answer : It is ionic bond

Strontium decays by beta decay part of the nuclear equation is shown below fill in the blank with a number?

Description : Strontium decays by beta decay part of the nuclear equation is shown below fill in the blank with a number?

Last Answer : 39 APEX

The radioactive Strontium-90 causes (1) Brain cancer (2) Skin cancer (3) Lung cancer (4) Bone cancer

Description : The radioactive Strontium-90 causes (1) Brain cancer (2) Skin cancer (3) Lung cancer (4) Bone cancer

Last Answer : (2) Skin cancer Explanation: Strontium-90 is a radioactive isotope of strontium produced by nuclear fission. Used mostly in weapons and nuclear power plants, poisoning usually occurs through accidental ... to various forms of skin cancer in cases where the radiation was absorbed through the skin.

Colour imparted to the Bunsen flame by strontium salt is - (1) bluish green (2) apple-green (3) brick red (4) crimson red

Description : Colour imparted to the Bunsen flame by strontium salt is - (1) bluish green (2) apple-green (3) brick red (4) crimson red

Last Answer : (4) crimson red Explanation: A flame test is performed by introducing a sample into the blue flame of a bunsen burner and noting any change in the colour of the flame. The tests can be used ... metallic elements in salts. With strontium salt, the colour of Bunsen flame ranges from crimson to red.

Itai-Itai disease is due to the toxicity of a) Lead b) Cadmium c) Strontium d) Tin.

Description : Itai-Itai disease is due to the toxicity of a) Lead b) Cadmium c) Strontium d) Tin.

Last Answer : b) Cadmium

Which of the following four elements has the largest atomic radius? Is it: w) strontium x) francium y) calcium z) bromine

Description : Which of the following four elements has the largest atomic radius? Is it: w) strontium x) francium y) calcium z) bromine

Last Answer : ANSWER: X -- FRANCIUM

In a flame test both lithium and strontium produce various shades of this color. What is this color?

Description : In a flame test both lithium and strontium produce various shades of this color. What is this color?

Last Answer : ANSWER: RED

The radioactive Strontium-90 causes : (1) Brain cancer (2) Skin cancer (3) Lung cancer (4) Bone cancer

Description : The radioactive Strontium-90 causes : (1) Brain cancer (2) Skin cancer (3) Lung cancer (4) Bone cancer

Last Answer : Skin cancer

Colour imparted to the Bunsen flame by strontium salt is (1) bluish green (2) apple-green (3) brick red (4) crimson red

Description : Colour imparted to the Bunsen flame by strontium salt is (1) bluish green (2) apple-green (3) brick red (4) crimson red

Last Answer : crimson red

Which one of the following is radioactive ? (1) Cesium (2) Platinum (3) Strontium (4) Thorium

Description : Which one of the following is radioactive ? (1) Cesium (2) Platinum (3) Strontium (4) Thorium

Last Answer : Thorium

Which of the following would be more reactive than magnesium?

Description : Which of the following would be more reactive than magnesium?

Last Answer : Type your answer here... Potassium (K)

Of the interhalogen compounds, `CIF_3` is more reactive than `BrF_3` , but `BrF_3` has higher conductance in the liquid state. The reason is that

Description : Of the interhalogen compounds, `CIF_3` is more reactive than `BrF_3` , but `BrF_3` has higher conductance in the liquid state. The reason is that

Last Answer : Of the interhalogen compounds, `CIF_3` is more reactive than `BrF_3` , but `BrF_3` has higher ... -` more easily D. `CIF_3` is most reactive

(A) Ethyl chloride is more reactive than vinyl chloride towards nucleophilic substitution reactions. (R) Vinyl chloride is `+I` electron pushing group

Description : (A) Ethyl chloride is more reactive than vinyl chloride towards nucleophilic substitution reactions. (R) Vinyl chloride is `+I` electron pushing group

Last Answer : (A) Ethyl chloride is more reactive than vinyl chloride towards nucleophilic substitution reactions. (R) Vinyl ... A) is incorrect but (R) is correct.

Phenol is more reactive than benzene towards electrophilic substitution reaction. In case of Phenol, the intermediate carbocation is more resonance st

Description : Phenol is more reactive than benzene towards electrophilic substitution reaction. In case of Phenol, the intermediate carbocation is more resonance st

Last Answer : Phenol is more reactive than benzene towards electrophilic substitution reaction. In case of Phenol, the ... D. A is incorrect but R is correct

Assertion: Phenol is more reactive than benzene towards electrophilic reactions. Reason : The +R effect of OH group increases the electron density on

Description : Assertion: Phenol is more reactive than benzene towards electrophilic reactions. Reason : The +R effect of OH group increases the electron density on

Last Answer : Assertion: Phenol is more reactive than benzene towards electrophilic reactions. Reason : The +R effect of ... D. A is incorrect but R is correct

Is carbon more reactive than chlorine?

Description : Is carbon more reactive than chlorine?

Last Answer : Need answer

Why is zinc is more reactive than iron?

Description : Why is zinc is more reactive than iron?

Last Answer : Zinc is more reactant than Iran because it is able to lose it'selectrons alot easier. bascically if there was a fight between thetwo of them then the zinc would win because it is morereactant.

If Metal A displaces Metal B from its solution, then Metal A _______. (1) is more reactive than B (2) is less reactive than B (3) is heavier than B (4) has the same reactivity as B

Description : If Metal A displaces Metal B from its solution, then Metal A _______. (1) is more reactive than B (2) is less reactive than B (3) is heavier than B (4) has the same reactivity as B

Last Answer : (1) is more reactive than B

It is easy to burst a gas-filled balloon with a needle than with a nail. It is because – (1) nail is more longer than needle. (2) nail exerts more pressure than needle on the balloon. (3) needle exerts more pressure than nail on the balloon. (4) gas is reactive with the needle.

Description : It is easy to burst a gas-filled balloon with a needle than with a nail. It is because – (1) nail is more longer than needle. (2) nail exerts more pressure than needle on the balloon. (3) needle exerts more pressure than nail on the balloon. (4) gas is reactive with the needle.

Last Answer : (3) needle exerts more pressure than nail on the balloon. Explanation: It is easy to burst a gas-filled balloon with a needle than with a nail because the needle applies more pressure than nail. Besides, ... tip of the needle, so only a little force gives a lot of pressure (pressure = force/area).

Give reason: Some metals are more reactive than others.

Description : Give reason: Some metals are more reactive than others.

Last Answer : Metals are electropositive and have tendency to donate electrons. Some elements give up their valence electrons and hence more reactive.

Why is SF4 more reactive than SF6 ?

Description : Why is SF4 more reactive than SF6 ?

Last Answer : Ans . SF4 has two unpaired electrons which it can donate further to extend its valency , hence it is reactive .’S’ in SF6 has maximum 6 0.S.

Why is fluorine (F2) more reactive than chlorine (Cl2)?

Description : Why is fluorine (F2) more reactive than chlorine (Cl2)?

Last Answer : Ans. F2 is more reactive than Cl2 due to greater repulsion in the non-bonded electron pairs in the molecule of F2 as compared to Cl2 therefore the bond cleavage in fluorine becomes easier.

Would you expect benzaldehyde to be more reactive or less reactive in nucleophlic addition reaction than propanal ? Explain.

Description : Would you expect benzaldehyde to be more reactive or less reactive in nucleophlic addition reaction than propanal ? Explain.

Last Answer : C-atom of carbonyl group of benzaldehyde is less electrophilic than C-atom of carbonyl group in propanal. Polarity of carbonyl group is in benzaldehyde reduced due to resonance making it less ... group in it is more than in benzaldehyde. This makes propanal more reactive than benzaldehyde. 

Why are aldehydes more reactive than ketones ?

Description : Why are aldehydes more reactive than ketones ? 

Last Answer : Ans. It is because of 2 reasons : The carboxyl compounds (both aldehydes & ketones) undergo nucleophilic addition reaction. (i) + I effect : The alkyl group in ketones due to their e- ... its reactivity. (ii) Steric hindrance : Due to steric hindrance in ketones, they are less reactive.

The position of three elements A, B and C in the periodic table shown below: a) State whether A is a metal or non-metal. b) State whether C is more reactive or less reactive than A. c) Will C be larger or smaller in size than B?

Description : The position of three elements A, B and C in the periodic table shown below: a) State whether A is a metal or non-metal. b) State whether C is more reactive or less reactive than A. c) Will C be larger or smaller in size than B?

Last Answer : a) Metals lie on the left side where as non-metals are B C placed on the right side of the periodic table. Group 17 is on the right side of the periodic table, thus element A is non-metal ... size decreases moving from left to right along a period. So atom C will be smaller in size than B.

Pick out the wrong statement. (A) Yellow phosphorous which is the most reactive allotropic form of phosphorous is transported under water (B) Apatite is the principal material present in phosphate rock which is chemically Ca10 (PO4 )6 (F, Cl, OH) (C) Urea is more hygroscopic than ammonium nitrate (D) Nitrogen fixation means the process of bringing atmospheric nitrogen into combination i.e. into nitrogen compound fo

Description : Pick out the wrong statement. (A) Yellow phosphorous which is the most reactive allotropic form of phosphorous is transported under water (B) Apatite is the principal material present in ... fixation means the process of bringing atmospheric nitrogen into combination i.e. into nitrogen compound fo

Last Answer : (C) Urea is more hygroscopic than ammonium nitrate

Which of the following statements correctly describes the general reactivity of alkynes? (a) An alkyne is an electron-rich molecule and therefore reacts as a nucleophile. (b) The σ bonds of alkynes are higher in energy than the bonds and are thus more reactive. (c) Unlike alkenes, alkynes fail to undergo electrophilic addition reactions. (d) Alkynes are generally more reactive than alkenes.

Description : Which of the following statements correctly describes the general reactivity of alkynes? (a) An alkyne is an electron-rich molecule and therefore reacts as a nucleophile. (b) The σ bonds ... fail to undergo electrophilic addition reactions. (d) Alkynes are generally more reactive than alkenes.

Last Answer : Alkynes are generally more reactive than alkenes.

26. DNA is a better genetic material than RNA because ... e) DNA is chemically less reactive. f) DNA is structurally more stable. g) DNA is non-catalytic and less easily degradable. h) All of the above.

Description : 26. DNA is a better genetic material than RNA because ... e) DNA is chemically less reactive. f) DNA is structurally more stable. g) DNA is non-catalytic and less easily degradable. h) All of the above.

Last Answer : h) All of the above.

6. DNA is a better genetic material than RNA because ... a) DNA is chemically less reactive. b) DNA is structurally more stable. c) DNA is non-catalytic and less easily degradable. d) All of the above.

Description : 6. DNA is a better genetic material than RNA because ... a) DNA is chemically less reactive. b) DNA is structurally more stable. c) DNA is non-catalytic and less easily degradable. d) All of the above.

Last Answer : d) All of the above.

It is easy to burst a gas-filled balloon with a neelde than with a nail. It is because (1) nail is more longer than needle. (2) nail exerts more pressure than needle on the balloon. (3) needle exerts more pressure than nail on the balloon. (4) gas is reactive with the needle.

Description : It is easy to burst a gas-filled balloon with a neelde than with a nail. It is because (1) nail is more longer than needle. (2) nail exerts more pressure than needle on the balloon. (3) needle exerts more pressure than nail on the balloon. (4) gas is reactive with the needle.

Last Answer : needle exerts more pressure than nail on the balloon.