Description : Based on the compounds of group 15 elements, the correct statement (s) is (are)
Last Answer : Based on the compounds of group 15 elements, the correct statement (s) is (are) A. `Bi_(2)O_(5) ... bond is strogner than the `P - P` single bond
Description : Which one of the following statements concerning elements in the Periodic Table is correct? A Elements of the same group all have the same number of electrons in the outermost occupied electron shell. B ... (Group 17) are all gases at room temperature. E The Group 13 elements are all metals.
Last Answer : D) Are compounds that exhibit both metallic & non-metallic properties to some extent and are exemplified by elements like germanium, silicon & boron
Description : What Based on the content of most fertilizers name two elements other than carbon that are found in compounds in plants?
Last Answer : Nitrogen and phosporus
Description : Oxygen differs from the other elements of the group. Compounds of oxygen with metals are more ionic in nature and hydrogen bonding is more important f
Last Answer : Oxygen differs from the other elements of the group. Compounds of oxygen with metals are more ionic in nature ... H_(2)O lt H_(2)Te -` boiling point
Last Answer : Oxygen differs from the other elements of the group. Compounds of oxygen with metals are more ... oxides are usually covalent and acidic in nature
Description : From the elements: Cl, Br, F, O, Al, C, Li, Cs and Xe; choose the following: (a) The element with highest negative electron gain enthalpy. (b) The element with lowest ionization enthalpy. ( ... . (f)The element which belongs to zero group. (g) The elements which forms largest number of compounds.
Last Answer : Ans. (a). The element chlorine (Cl) has the highest negative electron gain enthalpy. (b). The element cesium (Cs) has lowest ionization enthalpy. (c). The element fluorine F has lowest atomic radius. (d ... zero group (or group 18). (g). The element carbon (C) forms the largest number of compounds.
Description : The correct order of decreasing acidic strength of oxy acids of group 15 elements :
Last Answer : The correct order of decreasing acidic strength of oxy acids of group 15 elements : A. `HNO_(3) gt H_(3)SbO_(4) ... gt H_(3) PO_(4) gt H_(3) SbO_(4)`
Description : Identify the wrong statement in context of heartwood. (a) It is highly durable. (b) It conducts water and minerals efficiently. (c) It comprises dead elements with highly lignified walls. (d) Organic compounds are deposited in it.
Last Answer : (b) It conducts water and minerals efficiently
Description : Identify the wrong statement in context of heartwood: (1) It is highly durable (2) It conducts water and minerals efficiently (3) It comprises dead elements with highly lignified walls (4) Organic compounds are deposited in it
Last Answer : 2) It conducts water and minerals efficiently
Description : Find out the s - block elements compounds importance/uses.
Last Answer : Find out the s - block elements compounds importance/uses.
Description : 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?
Last Answer : Need answer
Description : The correct statement (s) regarding the binary transition metal carbonyl compounds is (are) (Atomic numbers: Fe = 26, Ni = 28)
Last Answer : The correct statement (s) regarding the binary transition metal carbonyl compounds is (are) (Atomic ... the oxidation state of the metal is increased
Description : The incorrect statement(s) regarding oxides of group-16 elements is/are
Last Answer : The incorrect statement(s) regarding oxides of group-16 elements is/are A. Reducing property of dioxide ... agent while `TeO_(2)` is a reducing agent
Description : Four elements that distinguish mobile marketing from traditional mass marketing are: scope of audience, type and format of messages, ___________, and response tracking. location-based targeting wide coverage mass distribution interest group setting
Last Answer : location-based targeting
Description : The basic strength of the hydrides of group 15 elements :
Last Answer : The basic strength of the hydrides of group 15 elements : A. decreases on moving down the group ... first increases upto `AsH_(3)` and then decreases
Description : The hydribes of group 15 elements act as :
Last Answer : The hydribes of group 15 elements act as : A. lewis acid B. lewis base C. both D. none
Description : List the elements of 15 th group of the periodic table. Name the distinct metals and non-metals of the group.
Last Answer : Nitrogen and phosphorous are non-metals. Arsenic and Antimony are metalloids, Bismuth is a metal.
Description : Which of the following is not correct concerning substitution and elimination reactions of alkyl halides? (a) The electrophile replaces the leaving group. (b) Compounds containing electron-donating groups bonded to an ... replaced by another atom or group in substitution reactions. (d) (a) and (b)
Last Answer : (a) and (b)
Description : Our present higher secondary curriculum is based on the premise that a number of courses in our scheme of studies which have identifical elements. This statement is based on the (a) Theory of identical ... (b) Theory of mental faculty (c) Theory of formal discipline (d) Theory of generalizations
Last Answer : (c) Theory of formal discipline
Description : Find the ratio by mass of the combining elements in the following compounds. -Maths 9th
Last Answer : Ratio by mass of the following compounds given below : 1) CaCO : Molar mass of calcium = 40 g Molar mass of oxygen = 16 g Molar mass of carbon = 12 g Hence , ratio by mass will be = 40 : 12 : 48 = 10 : 3 : 12 2) ... g Ratio by mass = 14 : 3 6) Ca(OH) : Ratio by mass = 40 : 32 : 2 = 20 : 16 : 1
Last Answer : (a) CaCOg → Ca: C :0 = 40:12 : 48= 10 : 3:12 (b) MgCI2 → Mg : Cl = 24 : 2 x 35.5 = 24 : 71 (c) H2SO4 → H : S : O = 2 x 1 : 32 : 4 x 16 = 2 : 32 : 64= 1:16: 32 (d) C2H5OH → C : H : 0 = 2 x 12 : 6 x 1 ... N : H = 14 : 3 x 1=14: 3 (f) Ca (OH)2 → Ca : 0 : H = 40 : 2 x 16 : 2 x 1= 40: 32 :2 = 20 :16:1
Description : Since the enthalpy of elements in their natural state is taken to be zero, the heat of formation `(Delta_(f)H)` of compounds
Last Answer : Since the enthalpy of elements in their natural state is taken to be zero, the heat of formation `( ... C. is zero D. May be positive or negative
Description : Which of the following elements react with metals to form their binary compounds exhibiting `-3` oxidation state ?
Last Answer : Which of the following elements react with metals to form their binary compounds exhibiting `-3` oxidation state ? A. N B. P C. As D. Bi
Description : Name five elements and five compounds those exist as gases at room temperature.
Last Answer : Name five elements and five compounds those exist as gases at room temperature.
Description : The chemical reactivity of noble gases involves the loss of electrons and hence it can form compounds with highly electronegative elements like F and
Last Answer : The chemical reactivity of noble gases involves the loss of electrons and hence it can form compounds with ... )d` and linear D. `sp` and linear
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
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
Description : The binary compounds of oxygen with other elements are called oxides. They are classified depending either upon their acid-base characteristics or on
Last Answer : The binary compounds of oxygen with other elements are called oxides. They are classified depending either upon their acid- ... . `H_(2)O` D. `CO_(2)`
Last Answer : The binary compounds of oxygen with other elements are called oxides. They are classified depending either upon their ... P_(2)O_(5)` D. `FeO, CuO`
Last Answer : The binary compounds of oxygen with other elements are called oxides. They are classified depending either upon their ... `Mn_(3)O_(4),N_(2)O_(5)`
Last Answer : The binary compounds of oxygen with other elements are called oxides. They are classified depending either upon their ... C. CO,NO D. `Na_(2),CaO`
Last Answer : The binary compounds of oxygen with other elements are called oxides. They are classified depending either upon their acid- ... . `N_(2)O, C_(3)O_(2)`
Description : Is platinum found in nature or is it only found combined with other elements in chemical compounds?
Last Answer : Platinum is found in the nature in elemental form.
Description : Is concrete a mixture of elements or mixture of compounds?
Last Answer : Concrete is a mixture of compounds.
Description : What is used to break down compounds into elements during electrolysis?
Last Answer : nv hv
Description : What elements will always form ionic compounds in a 12 ratio with zinc.?
Description : How Aluminum iron copper and oxygen are all examples of what compounds mixtures elements gases?
Description : Which element under normal circumstances does not combine chemically with other elements to form compounds?
Last Answer : Examples are helium, neon, argon.
Description : Which element forms compounds with all others elements except except helium neon and argon?
Last Answer : i believe the answer is flourine.
Description : What is the name given to the elements or compounds on the right side of the equation?
Last Answer : The elements and compounds to the right of the equations are called products.
Description : What is the difference between elements and compounds?
Last Answer : An element is a substance that is composed all of the same atom; carbon, oxygen, iron, etc. A compound contains two or more elements (that can be separated by chemical reactions).