321603 Assertion :
Chromium is hard but mercury is soft.
Reason :
Chromium is a 3d transition element.

321604 Identify the correct decreasing order of densities of d-block elements.

321605 Which element exhibits the highest density in \({\rm{3d}}\) series?

321606 Which of the following are correct about \(\mathrm{\mathrm{Zn}}\), \(\mathrm{\mathrm{Cd}, \mathrm{Hg}}\) ?
I. They exhibit high enthalpy of atomisation as the \(\mathrm{\mathrm{d}}\)-subshell is full
II. \(\mathrm{\mathrm{Zn}, \mathrm{Cd}}\) do not show variable oxidation states, Hg can show \(\mathrm{+1,+2}\) states
III. Compounds of \(\mathrm{\mathrm{Zn}, \mathrm{Cd}, \mathrm{Hg}}\) are paramagnetic
IV. They are soft metals

321607 In the series \(\mathrm{\operatorname{Sc}(Z=21)}\) to \(\mathrm{\mathrm{Zn}(Z=30)}\), the enthalpy of atomisation of zinc is the lowest, i.e., \(\mathrm{126 \mathrm{~kJ} \mathrm{~mol}^{-1}}\). Why?

321603 Assertion :
Chromium is hard but mercury is soft.
Reason :
Chromium is a 3d transition element.

321604 Identify the correct decreasing order of densities of d-block elements.

321605 Which element exhibits the highest density in \({\rm{3d}}\) series?

321606 Which of the following are correct about \(\mathrm{\mathrm{Zn}}\), \(\mathrm{\mathrm{Cd}, \mathrm{Hg}}\) ?
I. They exhibit high enthalpy of atomisation as the \(\mathrm{\mathrm{d}}\)-subshell is full
II. \(\mathrm{\mathrm{Zn}, \mathrm{Cd}}\) do not show variable oxidation states, Hg can show \(\mathrm{+1,+2}\) states
III. Compounds of \(\mathrm{\mathrm{Zn}, \mathrm{Cd}, \mathrm{Hg}}\) are paramagnetic
IV. They are soft metals

321607 In the series \(\mathrm{\operatorname{Sc}(Z=21)}\) to \(\mathrm{\mathrm{Zn}(Z=30)}\), the enthalpy of atomisation of zinc is the lowest, i.e., \(\mathrm{126 \mathrm{~kJ} \mathrm{~mol}^{-1}}\). Why?

321603 Assertion :
Chromium is hard but mercury is soft.
Reason :
Chromium is a 3d transition element.

321604 Identify the correct decreasing order of densities of d-block elements.

321605 Which element exhibits the highest density in \({\rm{3d}}\) series?

321606 Which of the following are correct about \(\mathrm{\mathrm{Zn}}\), \(\mathrm{\mathrm{Cd}, \mathrm{Hg}}\) ?
I. They exhibit high enthalpy of atomisation as the \(\mathrm{\mathrm{d}}\)-subshell is full
II. \(\mathrm{\mathrm{Zn}, \mathrm{Cd}}\) do not show variable oxidation states, Hg can show \(\mathrm{+1,+2}\) states
III. Compounds of \(\mathrm{\mathrm{Zn}, \mathrm{Cd}, \mathrm{Hg}}\) are paramagnetic
IV. They are soft metals

321607 In the series \(\mathrm{\operatorname{Sc}(Z=21)}\) to \(\mathrm{\mathrm{Zn}(Z=30)}\), the enthalpy of atomisation of zinc is the lowest, i.e., \(\mathrm{126 \mathrm{~kJ} \mathrm{~mol}^{-1}}\). Why?

321603 Assertion :
Chromium is hard but mercury is soft.
Reason :
Chromium is a 3d transition element.

321604 Identify the correct decreasing order of densities of d-block elements.

321605 Which element exhibits the highest density in \({\rm{3d}}\) series?

321606 Which of the following are correct about \(\mathrm{\mathrm{Zn}}\), \(\mathrm{\mathrm{Cd}, \mathrm{Hg}}\) ?
I. They exhibit high enthalpy of atomisation as the \(\mathrm{\mathrm{d}}\)-subshell is full
II. \(\mathrm{\mathrm{Zn}, \mathrm{Cd}}\) do not show variable oxidation states, Hg can show \(\mathrm{+1,+2}\) states
III. Compounds of \(\mathrm{\mathrm{Zn}, \mathrm{Cd}, \mathrm{Hg}}\) are paramagnetic
IV. They are soft metals

321607 In the series \(\mathrm{\operatorname{Sc}(Z=21)}\) to \(\mathrm{\mathrm{Zn}(Z=30)}\), the enthalpy of atomisation of zinc is the lowest, i.e., \(\mathrm{126 \mathrm{~kJ} \mathrm{~mol}^{-1}}\). Why?

321603 Assertion :
Chromium is hard but mercury is soft.
Reason :
Chromium is a 3d transition element.

321604 Identify the correct decreasing order of densities of d-block elements.

321605 Which element exhibits the highest density in \({\rm{3d}}\) series?

321606 Which of the following are correct about \(\mathrm{\mathrm{Zn}}\), \(\mathrm{\mathrm{Cd}, \mathrm{Hg}}\) ?
I. They exhibit high enthalpy of atomisation as the \(\mathrm{\mathrm{d}}\)-subshell is full
II. \(\mathrm{\mathrm{Zn}, \mathrm{Cd}}\) do not show variable oxidation states, Hg can show \(\mathrm{+1,+2}\) states
III. Compounds of \(\mathrm{\mathrm{Zn}, \mathrm{Cd}, \mathrm{Hg}}\) are paramagnetic
IV. They are soft metals

321607 In the series \(\mathrm{\operatorname{Sc}(Z=21)}\) to \(\mathrm{\mathrm{Zn}(Z=30)}\), the enthalpy of atomisation of zinc is the lowest, i.e., \(\mathrm{126 \mathrm{~kJ} \mathrm{~mol}^{-1}}\). Why?