Which of the following statements are not correct about element 
and 
having atomic number 19, 37 and 55 respectively?
A. Their ionisation potential would increase with increasing atomic number.
B. 
would have an ionisation potential between those 
and 
.
C. 
would have the highest ionisation potential.
D. 
would have the highest negative value of 
.
E. 
would have high electronegativity value on pauling scale than 
.
Choose the correct answer from the options given below
Text Solution
Verified by ExpertsA
Among the given statements, only A, C and E are incorrect while other B and D are correct. The correct form of 
and 
is
• As we move down the group, ionization potential decreases as the atomic number increases.
• 
with atomic number 55 has the lowest ionisation potential.
• 
and 
with atomic number 19 and 37 have equal electronegativity value on Pauling scale i.e. (0.8).
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