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The binary compound in which cation has +2 oxidation number is
In which of the following pairs, the radius of the second atom is greater than that of the first atom
Which property of the first six elements of period 3 (sodium to sulphur) continuously increases numerically?
Which of the following elements would be expected to form the largest ion with a noble gas electron configuration?
The radius of Na+ ion is
Which of the following has lowest melting point?
Al is often used to remove air bubbles from molten metals due to its property.
The trends in melting points of the elements of 3rd period is depicted in figure below The sharp decreases observed from ‘Si’ to ‘P’ is due to
The radii of H, H+ and H– are in the order of
Keeping in view the size of atoms and ions which order is incorrect
The graph which shows the first seven successive ionization energies, of an element. In which Group of the Periodic Table is the element found
The ionization energy of nitrogen is more than oxygen because of
The melting and boiling point along 2nd and 3rd period
Element ‘M’ leaves scratch on glass like iron and has high melting point. It forms a chloride (MCl2), What does this suggest about element M?
, The metal ‘M’ in given reaction is:
Which of the following elements of group IIA is least reactive
The electronic configuration of four different elements is given below. Identify the element belongs to II-A group
When the elements of group II-A are exposed to air, they quickly become coated with layer of oxide. What is the purpose of this oxide layer
In the reaction Be + 2NaOH Na2BeO2 +T The second product (T) is
The product formed in small amount when Mg is burn in air
The element which burns with a brilliant yellow flame in chlorine atmosphere is
Which pair of transition elements shows abnormal electronic configuration?
Oxidation state of ‘Mn’ in KMnO4, K2MnO4, MnO2 and MnSO4 is in the order
All of the following contain one unpaired s-electron in their ground state except
Which element shows maximum oxidation state?
Which specie has maximum number of unpaired electrons
In which of the following complexes Iron has maximum oxidation state
Which one of the following ion has 3d5 subshell arrangement
The IUPAC name of [Co Br (NH3)4 (H2O)] (NO3)2
Transition elements of 3d-series does not contain:
Which is bidentate neutral ligand
Which of the following pair belongs to non-typical transition elements?
Group VI-B of transition elements contains:
The characteristic properties shown by typical transition elements will be
The number of electron pairs accepted by the central atom in a transition metal complex is known as
The anti-cancer drug cisplatin has the formula [Pt (NH3)2Cl2]. What is the oxidation state of platinum and co-ordination number in it?
Ethylenediamine (en) is a
All of the following shows coloured compound in +2 oxidation state except
In which complex ligand makes ring like structure
Which of the following ions of transition metal form colourless compounds
The IUPAC name of the coordination compound K4 [Fe (CN) 6] is
Which of the following has maximum first ionization potential in period number three?
The correct order of radii is:
Which one of the following is not a periodic property?
The first ionization energy of helium is the highest of all the elements because of
While moving down the group in the periodic table, _____________ will increase
The most electronegative element in the periodic table is?
Which of the following metal is better conductor than others?
Tri-positive ion formation is not possible for
According to modern periodic law the variation in properties of elements is related to:
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