Assess the properties of elements and classify it as p and d block elements.
• form coloured compounds
• includes metals and non-mentals.
•show various oxidation states.
• The last electrons are filled in the outermost shell.
• show similar properties, in periods.
•The last electrons are filled in the shell preceding the outermost shell.
•Only metals are included.

Choose the incorrect statement which is suitable to 'd' block elements. a. form coloured compounds. b. Larger size across the period. c. Show various oxidation states. d. They are metals.

There are three shells in the atom of element 'X', 6 electrons are present in its outermost shell. In which group is this element included?

Pick out the statements which suits to f block elements. a. All of them are naturally occurring elements. b. Uranium and Thorium are f block elements. c. Last electrons is filled in the shell pre-ceding the outermost shell. d. last electrons are filled up in the antepenultimate shell. e. Includes some radioactive elements. f. Some of them are used as catalyst in petroleum industry.

The last electron of an element is filled in the 3d^2 subshell. Then find the following. a) Atomic number b) Group, period Block

The elements in which the last electron enters into the p-orbitals of their outer-most shell are called p-blocks elements:- Name two allotrops of sulphur.

An atom has three shells and there is 6 electrons in the outermost subshell of the atom. Answer te following. a) Which is the element? b) Write the common oxidation state of its compounds. c) Is it metal or non-metal?

Transition elements are d-block elements, with some exceptions. Usually they are paramagnetic. They show variable oxidation states. They and their compounds show catalytic property Zn (atomic number 30) is not a transition element, though it is a d-block element. Why?

Transition elements are d-block elements, with some exceptions. Usually they are paramagnetic. They show variable oxidation states. They and their compounds show catalytic property What is the reason for their catalytic property?

Transition elements are d-block elements, with some exceptions. Usually they are paramagnetic. They show variable oxidation states. They and their compounds show catalytic property. Which is more paramagnetic: Fe^(2+)or Fe^(3+) . Why?

The elements in which the last electron enters into the p-orbitals of their outer-most shell are called p-blocks elements:- Give a method for the preparation of phosphine.