Inorganic Chemistry, PERIODS

Q: The improvement (s) made in Mendeleev periodic table is/are:

(a) :  Place of isotops
(b) :  Electronic configuration
(c) :  Correction of wrong pairs ( Ar & K)
(d) :  All of these
(e) :  None of the Above
Answer:  Electronic configuration
Explanation:  

Q: The radius of a positive ion is called:

(a) :  Atomic radii
(b) :  Covalent radii
(c) :  Lonic radic
(d) :  Cationic radii
(e) :  None of the Above
Answer:  Cationic radii
Explanation:  

Q: Which of the following is ths strongest Lewis base?

(a) :  BH₃
(b) :  CH₄
(c) :  NH₃
(d) :  H₂O
(e) :  None of the Above
Answer:  NH₃
Explanation:  

Q: Trend of electron affinity is:

(a) :  Increases in period and groups
(b) :  decreases in period and groups
(c) :  First increases and than decreases in a group
(d) :  Always increases in a group and
(e) :  None of the Above
Answer:  Always increases in a group and
Explanation:  

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