निम्नलिखित तत्त्वों में किस तत्त्व की प्रथम आयनन ऊर्जा अधिकतम हैं ?
(क) Na
(ख) Al
(ग) Ca
(घ) P
Answers
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Answer:
P
Explanation:
we know that as we go forward of the period the first ionisation enthalpy increases and go down the group ionisation entahlpy is decreases. so,
atomic number of Na = 11
,, ,, ,, Ca = 20
,, ,, ,, Al = 13
,, ,, ,, P = 15
hence the sequence will be, Ca < Na < Al < P
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