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Questions and Answers
What is the reason for the decrease in atomic radii across the 3d series?
What is the reason for the decrease in atomic radii across the 3d series?
- Poor shielding by d electrons, resulting in increased attraction (correct)
- Increase in the number of unpaired electrons
- Increase in nuclear charge and effective nuclear charge
- Decrease in the number of electrons in the outermost shell
What is the effect of lanthanoid contraction on the atomic radii of the 4d and 5d series?
What is the effect of lanthanoid contraction on the atomic radii of the 4d and 5d series?
- The radius of the 4d series is greater than the 5d series
- The radius of the 5d series is greater than the 4d series
- The radius of the 4d and 5d series is constant
- The radius of the 4d series is similar to the radius of the 5d series (correct)
Which of the following elements has the lowest boiling point?
Which of the following elements has the lowest boiling point?
- Zn
- Hg (correct)
- Cd
- Sc
What is the reason for the increase in atomic radii from Ni to Cu to Zn?
What is the reason for the increase in atomic radii from Ni to Cu to Zn?
What is the effect of the filling of 4f orbitals on the atomic radii of the 5d series?
What is the effect of the filling of 4f orbitals on the atomic radii of the 5d series?
What is the reason for the gradual decrease in atomic radii from Sc to Mn?
What is the reason for the gradual decrease in atomic radii from Sc to Mn?
What is the primary reason for the lanthanoid contraction?
What is the primary reason for the lanthanoid contraction?
Which of the following statements is true about the trends in atomic radii in the lanthanoid series?
Which of the following statements is true about the trends in atomic radii in the lanthanoid series?
What is the effect of the shielding power of orbitals on the atomic radii?
What is the effect of the shielding power of orbitals on the atomic radii?
Which of the following elements has the smallest atomic radius?
Which of the following elements has the smallest atomic radius?
What is the primary reason for the actinoid contraction?
What is the primary reason for the actinoid contraction?
What is the trend in ionization enthalpy from left to right in a period?
What is the trend in ionization enthalpy from left to right in a period?
What is the effect of lanthanoid contraction on the physical and chemical properties of 4d and 5d elements?
What is the effect of lanthanoid contraction on the physical and chemical properties of 4d and 5d elements?
Which of the following statements is true about the electron configuration of actinoids?
Which of the following statements is true about the electron configuration of actinoids?
What is the trend in atomic radii across the actinoid series?
What is the trend in atomic radii across the actinoid series?
Why do actinoids resemble lanthanoids in their oxidation states?
Why do actinoids resemble lanthanoids in their oxidation states?
What is the result of the poor shielding effect of 5f orbitals in actinoids?
What is the result of the poor shielding effect of 5f orbitals in actinoids?
Which of the following statements is false about the oxidation states of actinoids?
Which of the following statements is false about the oxidation states of actinoids?
What is the colour of the ion Mn2+?
What is the colour of the ion Mn2+?
What is the reason for the formation of coloured ions?
What is the reason for the formation of coloured ions?
What is an example of a complex compound?
What is an example of a complex compound?
What is the name of the test that forms a brown ring at the junction of two layers?
What is the name of the test that forms a brown ring at the junction of two layers?
Why do transition metals show catalytic property?
Why do transition metals show catalytic property?
Which of the following ions is known to have a yellow colour?
Which of the following ions is known to have a yellow colour?
What is the solubility of copper oxide (CuO) in water?
What is the solubility of copper oxide (CuO) in water?
What is the product of the reaction between copper carbonate and dilute sulphuric acid?
What is the product of the reaction between copper carbonate and dilute sulphuric acid?
What is the use of blue vitriol (CuSO4) in a specific industry?
What is the use of blue vitriol (CuSO4) in a specific industry?
What is the reaction product when iron wire reacts with dry chlorine gas?
What is the reaction product when iron wire reacts with dry chlorine gas?
What is the characteristic of the solution of ferric chloride (FeCl3) in water?
What is the characteristic of the solution of ferric chloride (FeCl3) in water?
What is the crystalline form of green vitriol (FeSO4)?
What is the crystalline form of green vitriol (FeSO4)?
What is the reason why most actinoid metals are less affected by nitric acid?
What is the reason why most actinoid metals are less affected by nitric acid?
Which of the following is a use of d and f block elements?
Which of the following is a use of d and f block elements?
What is the role of TiO2 in dry cell batteries?
What is the role of TiO2 in dry cell batteries?
Which catalyst is used in the contact process?
Which catalyst is used in the contact process?
What is the role of nickel in the Haber process?
What is the role of nickel in the Haber process?
Which process uses a nickel complex as a catalyst?
Which process uses a nickel complex as a catalyst?
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