Which among the following is not considered as a part of transition elements?
A transition metal is one that forms one or more stable ions which have incompletely filled d orbitals. On the basis of this definition, scandium and zinc do not count as transition metals - even though they are members of the d block.
Which among the following transition metal has lowest melting point?
Zn has lowest melting point because it doesnot have any unpaired electrons.
Transition metals with highest melting point is
W belongs to 5d series and also it have lot of unpaired electrons thus it forms strong metallic bonding.
Transition metals with lowest melting point is
Zinc (Zn) has the lowest melting point in 3d series because of the absence of d-electrons.
Which is the most stable oxidation state of iron?
Fe has d5 configuration in +3 oxidation state.
Electronic configuration of Cu3+ is
Cu has atomic number 29.
Maximum magnetic moment is shown by
Magnetic moment is maximum for the element having maximum unpaired electrons.
Maximum oxidation state is shown by
Os shows maximum oxidation state of +8.
Which one of the following compound is deliquescent?
ZnCl2 is deliquescent.
Which of the following ion has smallest radii?
In period when we move from left to right in a period atomic radii 1st decreases till nickel then starts increasing so Ni2+ has smallest radii.
Which of the following pairs of ions have same paramagnetic moment?
Cu2+, Ti3+ will have same unpaired electrons and hence same paramagnetic moment.
Which of the following metals have only one oxidation state?
Sc,Al has only one oxidation state i.e. +3.
Co,Fe has various oxidation states; most common are +2 and +3.
Mohr’s salt is a
Mohr salt is an example of double salt. Mohr Salt is
FeSO4 . (NH4)2 SO4.6H2O
Red hot steel rods on suddenly immersing in water become
Red hot steel rods on suddenly immersing in water become hard and brittle.
Which of the following methods is based on distribution law?
Parkes process is a process for removing silver from Pb. It is an example of Liquid liquid extractions
Which is called chromic acid?
Chromic Acid is a naturally occurring oxide with a formula H2CrO4.
Which one of the following combines with Fe2+ ion to form a brown complex?
[Fe(H2O)5NO]2+is brown color complex.
Lucas reagent is
Lucas Test is done to distinguish primary secondary and tertiary alcohols. Lucas reagent is ZnCl2 + HC
Vitamin B12 contains?
Vitamin B12 contains Co3+.
Which is least soluble in water?
Ag2S is least soluble in water.
A reduction in the atomic size with increase in atomic number is characteristic of the elements of
In f block elements with increase in atomic number atomic radii decreases smoothly.
Nitrous oxide is evolved when Zn is treated with
4Zn + 10HNO3 → 4Zn(NO3)2 + N2O + 5H2O
Ferrous sulphate on heating gives
FeSO4 on heating gives SO2 and SO3
In the reaction, SnCl2 + HgCl2 → A + SnCl4
SnCl2 + HgCl2 → Hg + SnCl4
Ag+ ion is isoelectronic with
Ag+ is isoelectronic with Cd2+