Periodic Classification of Elements
The type of elements present in group 3 to 12[IB to VIIB and VIII] are :
Which give coloured carbonate precipitate?
The type of elements present in group 3 to 12[IB to VIIB and VIII] are :
Which of the following sets of atomic numbers corresponds to the atomic numbers of inert gases belonging to periods which contain 4d and 5d transition series?
An element having electronic configuration $$ [Ar] 3d^24s^2 $$ belongs to:
Give the formula and valency of chromate.
Which of the following is not correct statement for periodic classification of elements?
Indicate the wrong statement on the basis of the periodic table.
There are many elements in the periodic table which exhibit variable valency. This is a particular characteristic of :
Which of the following is a transition element?
Give the formula and valency of chromate.
What are transition elements ? Why are they so called ? Name the different transitions series.