Why do transition metals have higher I.E than s –block elements ?

Why do transition metals have higher I.E than s –block elements ?
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Answer :

Ans: It is due to smaller atomic size than s-block elements , effective nuclear charge is more , terefore I.E is high.
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Related questions

Why are Ti+2 and other transition metals and their ions paramagnetic ?

Description : Why are Ti+2 and other transition metals and their ions paramagnetic ?

Last Answer :  Ans: These ions have unpaired electrons in d- subshell. 

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 . 

Why do transition metals have high enthalpy of atomization ?

Description : Why do transition metals have high enthalpy of atomization ?

Last Answer :  Ans : it is due to strong metallic bonds and additional covalent bonds 

Why are Zn , Cd , Hg are not regarded as transition metals ?

Description : Why are Zn , Cd , Hg are not regarded as transition metals ? 

Last Answer : Ans: It is because neither they nor their ions have incompletely filled d- orbitals . 

What are d Block Elements ?

Description : What are d Block Elements ? 

Last Answer : Ans: Those elements in which d-orbital are progressively filled up are known as d-orbital.

Application of d- & f- block elements

Description : Application of d- & f- block elements

Last Answer : Application of d- & f- block elements:- 1. Iron and steel used in construction,as catalyst in Haber's process 2. CrO2 is used in magnetic tapes 3. Ni is in hydrogenation 4. W ( ... in contact process 9. Titanium is in nuclear reactions. 10. PdCl2 is in Wacker's process.

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 .

Description : 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 . 

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 metal fluorides are ionic in nature where as chlorides and bromides are covalent in nature .

Description : Why are transition metal fluorides are ionic in nature where as chlorides and bromides are covalent in nature . 

Last Answer : Ans - It is because of fluorine is most electronegative where as Cl and Br are less electro negative . Greater the difference in electro negativity more will be ionic character .

Why Mn+2 is more stable than Mn+3 but Fe +3 is more stable than Fe+2 ?

Description : Why Mn+2 is more stable than Mn+3 but Fe +3 is more stable than Fe+2 ?

Last Answer : Ans Mn+2 has half filled d- orbital ,therefore it is more stable than Mn+3 Fe+3 has half filled d- orbital, therefore it is more stable than Fe +2 . 

Why is K2Cr2O7 generally preferred over Na2Cr2O7 in a volumetric analysis .Give reason .

Description : Why is K2Cr2O7 generally preferred over Na2Cr2O7 in a volumetric analysis .Give reason .

Last Answer : Ans : It is because Na2Cr2O7 is hygroscopic in nature that is why it absorbs moisture from atmosphere , therefore its standard solution can not be prepared .

Why are lanthanoid colored and paramagnetic L

Description : Why are lanthanoid colored and paramagnetic L

Last Answer : Ans It is due to presence of unpaired electrons, they are paramagnetic and they absorb light From visible region and undergoes f-f transition and radiate complementary colour . 

Why is Cu+1 diamagnetic and Cu +2 paramagnetic ?

Description : Why is Cu+1 diamagnetic and Cu +2 paramagnetic ?

Last Answer : It is because Cu+ does not have unpaired electrons where as Cu+2 has unpaired electrons in d-sub cell . 

Why do Zr and Hf show similar properties ?

Description : Why do Zr and Hf show similar properties ?

Last Answer :  Ans It is due to similar ionic size which due to lanthanide contraction . 

Why are Cr+ , Ag+ & Sc+3 Colour less ?

Description : Why are Cr+ , Ag+ & Sc+3 Colour less ? 

Last Answer : Ans It is because they do not have unpaired electrons ,therefore can not under goes d-d transition .

Why does V2O5 acts as catalyst ?

Description : Why does V2O5 acts as catalyst ?

Last Answer : Ans : It is because V shows variable O.S . 

What is an lanthanoid contraction ? What is its cause ? Give its consequences .

Description : What is an lanthanoid contraction ? What is its cause ? Give its consequences .

Last Answer : Ans The decrease in atomic and ionic size with increase in atomic no. in lanthanoid series is called lanthanoid contraction . The cause of lanthanoid contraction is poor shielding effect of d and f ... is close resemblance between elements of 4 d and 5 d transition series . due to similar ionic 

Why Ce+3 Can be easily Oxidised to Ce+4 ?

Description : Why Ce+3 Can be easily Oxidised to Ce+4 ?

Last Answer : Ans : It is because Ce+4 has stable electronic configuration . 

What is the highest oxidation state shown by Cr. (24) , Mn(25) ?

Description : What is the highest oxidation state shown by Cr. (24) , Mn(25) ?

Last Answer : Ans: Cr. Shows (+6) and Mn Shows (+7) Oxidation state .  

f-block elements are also called (a) Alkali metals (b) Inner transition elements (c) Transition elements (d) Transuranic elements

Description : f-block elements are also called (a) Alkali metals (b) Inner transition elements (c) Transition elements (d) Transuranic elements

Last Answer : Ans:(b)

The elements that have an outer electron configuration ns2 (read: n - s - 2) are called: w) halogens x) transition metals y) alkaline earths z) noble gases

Description : The elements that have an outer electron configuration ns2 (read: n - s - 2) are called: w) halogens x) transition metals y) alkaline earths z) noble gases

Last Answer : ANSWER: Y -- ALKALINE EARTHS

Explain the following : (i) Low spin octahedral complexes of nickel are not known. (ii) The π-complexes are known for transition elements only. (iii) CO is a stronger ligand than NTL, for many metals. -Chemistry

Description : Explain the following : (i) Low spin octahedral complexes of nickel are not known. (ii) The π-complexes are known for transition elements only. (iii) CO is a stronger ligand than NTL, for many metals. -Chemistry

Last Answer : (i) The electronic configuration of Ni is [Ar] 3d8 4s2 which shows that it can only form two types of complexes i.e. square planar (dsp2) in presence of strong ligand and tetrahedral (sp3) in ... more splitting of d-orbitals and moreover it is also able to form π bond due to back bonding.

What are transition elements? (1) Elements whose two outermost shells are incomplete (2) Elements which possess properties of both, metals and non-metals (3) They have eight electrons in the outermost shell (4) Elements whose three outermost shells are incomplete

Description : What are transition elements? (1) Elements whose two outermost shells are incomplete (2) Elements which possess properties of both, metals and non-metals (3) They have eight electrons in the outermost shell (4) Elements whose three outermost shells are incomplete

Last Answer : (1) Elements whose two outermost shells are incomplete

Why ‘f block’ elements are called inner transition elements?

Description : Why ‘f block’ elements are called inner transition elements?

Last Answer : The elements for which f sub shells are filling are called the inner transition elements.

Why are‘d block’ elements called outer transition elements?

Description : Why are‘d block’ elements called outer transition elements?

Last Answer : ‘d block’ elements are called outer transition elements because they contain at most two electrons in their outer shell.

Catalytic converters are generally made from (1) Alkaline metals (2) Hydrogen (3) Transition metals (4) Carbon

Description : Catalytic converters are generally made from (1) Alkaline metals (2) Hydrogen (3) Transition metals (4) Carbon

Last Answer : (3) Transition metals Explanation: Transition metals are used directly as catalysts in the anti-pollution catalytic converters in car exhausts. For example, expensive transition metals such as ... nitrogen monoxide, which are converted to the non-polluting gases nitrogen and carbon dioxide.

Which among the following is not a characteristic of transition metals? (1) Tendency to gain electrons (2) Low electronegativity (3) Low ionization energy (4) Malleability

Description : Which among the following is not a characteristic of transition metals? (1) Tendency to gain electrons (2) Low electronegativity (3) Low ionization energy (4) Malleability

Last Answer : (1) Tendency to gain electrons Explanation: The transition metals have a tendency to lose electrons. Since the electrons in the highest energy level are actually on a lower principal enemy number than the ... ions, the 4s electrons are always lost first; so, they form only cations (positive ions).

The catalytic activity of transition metals and their compounds is ascribed mainly to (1) their chemical reactivity (2) their magnetic behaviour (3) their unfilled d-orbitals (4) their ability to adopt variable oxidation states

Description : The catalytic activity of transition metals and their compounds is ascribed mainly to (1) their chemical reactivity (2) their magnetic behaviour (3) their unfilled d-orbitals (4) their ability to adopt variable oxidation states

Last Answer : (4) their ability to adopt variable oxidation states

Which among the following is not a characteristic of transition metals? (1) Tendency to gain electrons (2) Low electronegativity (3) Low ionization energy (4) Malleability

Description : Which among the following is not a characteristic of transition metals? (1) Tendency to gain electrons (2) Low electronegativity (3) Low ionization energy (4) Malleability 

Last Answer : Tendency to gain electrons

Catalytic converters are generally made from : (1) Alkaline metals (2) Hydrogen (3) Transition metals (4) Carbon

Description : Catalytic converters are generally made from : (1) Alkaline metals (2) Hydrogen (3) Transition metals (4) Carbon

Last Answer : Transition metals

A hydrogen like atom (atomic number Z) is in a higher excited state of quantum number n. The excited atom can make a transition to the first excited s

Description : A hydrogen like atom (atomic number Z) is in a higher excited state of quantum number n. The excited atom can make a transition to the first excited s

Last Answer : A hydrogen like atom (atomic number Z) is in a higher excited state of quantum number n. The excited ... . (lonization energy of H-atom = 13.6 eV)

How many elements are in the first and second inner transition series.name these series

Description : How many elements are in the first and second inner transition series.name these series

Last Answer : Ans: 14 elements in each series. (i) Lanthanides series (ii) actinides series

Define Representative Elements & Transition Elements.

Description : Define Representative Elements & Transition Elements.

Last Answer : Ans : Representative Elements : The elements of Sub Group A are called Main Or representative Elements. The properties of these elements are represented by their valency electrons. Transition Elements : (1) The ... a) Outer Transition or d - block Elements b) Inner Transition or f - block Elements.

Copper is the most noble of first row transition metals and occurs in small deposits in serveral countries. Ores of copper include chalcanthite `(CuSO

Description : Copper is the most noble of first row transition metals and occurs in small deposits in serveral countries. Ores of copper include chalcanthite `(CuSO

Last Answer : Copper is the most noble of first row transition metals and occurs in small deposits in serveral ... -reduction. Iron is removed from chalcopyrite as.

Copper is the most noble of first row transition metals and occurs in small deposits in serveral countries. Ores of copper include chalcanthite `(CuSO

Description : Copper is the most noble of first row transition metals and occurs in small deposits in serveral countries. Ores of copper include chalcanthite `(CuSO

Last Answer : Copper is the most noble of first row transition metals and occurs in small deposits in ... self-reduction. Partial roasting of chalcopyrite produces

What is Characteristics of transition metals?

Description : What is Characteristics of transition metals?

Last Answer : They are malleable.

Why can transition metals form cations with a variety of charges?

Description : Why can transition metals form cations with a variety of charges?

Last Answer : Transition metals often form ions without complete octets that'swhy all the stable ions are all cations. You can also tell thatthey form cations because some of the transition metals formcolored compounds and give off light. Light is only given off bycations, not anions.

Why can transition metals form cations with a variety of charges?

Description : Why can transition metals form cations with a variety of charges?

Last Answer : Transition metals often form ions without complete octets that'swhy all the stable ions are all cations. You can also tell thatthey form cations because some of the transition metals formcolored compounds and give off light. Light is only given off bycations, not anions.

Which among the following is not a characteristic of transition metals? (1) Tendency to gain electrons (2) Low electro negativity (3) Low ionization energy (4) Malleability

Description : Which among the following is not a characteristic of transition metals? (1) Tendency to gain electrons (2) Low electro negativity (3) Low ionization energy (4) Malleability

Last Answer : (1) Tendency to gain electrons Explanation: The transition metals have a tendency to lose electrons. Since the electrons in the highest energy level are actually on a lower principal energy number than the ... makes it relatively easy to lose some or all of their electrons to land in stable state.

Pick out the wrong statement. (A) Copper is the metal having the highest electronic conductivity (B) Hardenability & Weldability of metals are inversely related (C) Covalent bonding formed by sharing of electrons is present in all semiconductor materials (D) Glass transition temperature applies to 'polymers' but not to 'glasses'

Description : Pick out the wrong statement. (A) Copper is the metal having the highest electronic conductivity (B) Hardenability & Weldability of metals are inversely related (C) Covalent bonding formed by ... all semiconductor materials (D) Glass transition temperature applies to 'polymers' but not to 'glasses'

Last Answer : Option A

The binary compound of Hydrogen with S block elements are called as ------------------

Description : The binary compound of Hydrogen with S block elements are called as ------------------

Last Answer : Ans: ionic hydride

Which elements of s- block are largely found in biological fluids & what is its importance?

Description : Which elements of s- block are largely found in biological fluids & what is its importance?

Last Answer : Mono valent sodium and potassium ions and divalent magnesium and calcium ions are found in large proportions in biological fluids. These ions perform important biological functions such as maintenance of ion balance and nerve impulse conduction.

What are s- block elements?

Description : What are s- block elements? 

Last Answer : s-block elements are those in which the last electron enters the outermost s-orbital. As the s-orbital can accommodate only two electrons, two groups (1 & 2) belong to the s-block of the Periodic Table. 

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 Elements of Group 16 occur as cations in ionic compounds. C Oxides of elements in Groups 16 and 17 are basic. D The halogens (Group 17) are all gases at room temperature. E The Group 13 elements are all metals.

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

Which one of the following best defines the word “allotropes”? A Different structural forms of an element B A pair of substances that differ by H+ C Elements that possess properties intermediate between those of metals and nonmetals D Atoms of a given atomic number that have a specific number of neutrons E The different phases (solid, liquid or gas) of a substance

Description : Which one of the following best defines the word allotropes ? A Different structural forms of an element B A pair of substances that differ by H+ C Elements that possess properties intermediate between ... a specific number of neutrons E The different phases (solid, liquid or gas) of a substance

Last Answer : A Different structural forms of an element 

Give reason for the higher melting point and boiling point of alkali earth metals than alkali metals.

Description : Give reason for the higher melting point and boiling point of alkali earth metals than alkali metals. 

Last Answer : The melting and boiling points of these metals are higher than the corresponding alkali metals due to smaller sizes. 

Which is not a type of elements? (1) Metals (2) Non Metals (3) Metalloids (4) Gases

Description : Which is not a type of elements? (1) Metals (2) Non Metals (3) Metalloids (4) Gases

Last Answer : (3) Metalloids Explanation: Element is a chemical substance consisting of atoms having the same number of protons in their atomic nuclei. There are 118 elements that have been identified. The elements classified as metalloids are boron, silicon, germanium, arsenic, antimony, tellurium and polonium.

In known elements, the maximum number is of [CPMT 1985] (A) Metals (B) Non-metals (C) Metalloids (D) None of these

Description : In known elements, the maximum number is of [CPMT 1985] (A) Metals (B) Non-metals (C) Metalloids (D) None of these

Last Answer : (A) Metals

Why II group elements are called alkaline earth metals ?

Description : Why II group elements are called alkaline earth metals ? 

Last Answer :  These are called so because their oxides and hydroxides are alkaline in nature and these metal oxides are found in the earth’s crust.  

Why I group elements are called alkali metals ?

Description : Why I group elements are called alkali metals ? 

Last Answer : These are called so because they form hydroxides on reaction with water which are strongly alkaline in nature. 

The lanthanide series elements are also known as: w) rare earth elements x) non-metals y) fifth period elements z) sixth period elements

Description : The lanthanide series elements are also known as: w) rare earth elements x) non-metals y) fifth period elements z) sixth period elements

Last Answer : ANSWER: W -- RARE EARTH ELEMENTS