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Which of the following statements is/are correct?
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By Expert Faculty of Sri Chaitanya
a
An anion is larger than a cation if they are isoelectronic.
b
Out of Na⊕ and Al3+,Na⊕ has the largest size.
c
The ionic radii of trivalent lanthanides La3+,Ce3+,Pr3+....] decreases with increasing atomic number.
d
Out of P3,S2−, and Cl-,Cl -ion has the largest size
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Correct option is A
for isoelectronic anions greater the charge greater will be size P-3>S-2>Cl-1
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The first four successive ionization energies for an element are 6.113, 11.871, 20.908 and 67.1 (in eV) respectively. The number of valence shell electrons is
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