Chemistry Flashcards
The correct order of atomic radii
F less than Li less than Na less than K
Atomic radius of fluorine is only greater than
Ne
Which of the following is smallest size
Na plus
Which of the following series is arranged in order of increasing value
The first ionization energy of Oxygen fluorine neon
In the following the element with the highest ionization energy is
[Ne] 3s2 3p3
Which if the following has greater negative first electron affinity
Carbon
Which of the following group of element have positive 1 st electron affinity
2A
Generally the melting point decrease from VA to VIII A along the period but with exception of
Sulphur
Correct order of group 2A elements
Be greater Ca greater Mg
In which group melting and boiling point decrease down the group
1A
The element which has boiling point less than 0 C is
Nitrogen
Which of the following is incorrect information
Electrical conductivity of metals increases with the increase of temp
Which if the following group of element have extra ordinary high value of electrical conductivity
1B
Which if the following alkali metals forms only normal oxide when it reacts with O2
Lithium
The element of group 1 A rwct voilently with water and make solution
Alkaline
Which if the following metals can form peroxide with oxygen
Ba
Which one posses maximum number number of unpaired electrons
Mnplus2
The element which gains electronic configuration of a noble gas at +3 oxidation state
Sc
At which oxidation state Cu axhieves electeonic configuration of Zn+2
+1
Which two pair show same ixidation state of iron
Fe2(SO) 4 , Fe2O3
Which has same charge on central metal atom as the coordination sphere
[Cu (NH3) ]SO4
Which transtion metals serves as catalyst for oxidation of alkanes
Cu
Number of electron involved in d-d transition of [Ti(H2O) ]+3
+1
Ti+3 shows minimum absorbtion at______P_________wavelength
Red, Blue
The algebric sum of charge present on the central metal atom ion and the total charge on the ligand is called
Charge on coordination sphere
Which one complex is more stable
[pt l(C2O4) ]-2
The anomalous electronic configuration shown by chromium and copper among 3-d series element is due to
Stability associated with this configurarion
Copper is typical transition metal. Its atomic number is 29 In which oxidation state does it partially filled orbital in d-subshell
Cu+2
The geometry of complex depends upon type of _______ taking place in the valence shell of centeal metal atom
Hybridization
Violet color of [Ti(H2O) ]+3 ion is due to
Central metal ion
The octahedral geometry of complexes [Co(NH3) 6]+3 had hybridization
Sp3d2
In complex potassium hexacyanoferrate(111) [K3Fe(CN6) ] the coordiantion number of Fe is
6
The transition element which doesnot show variable valency is
Zn
In 3rd series of transitionbelements paramagnetic behaviour is maximum for Mn+2 and
Cr+3
The transition element which doesnot shiw variable valency is
Zn
