question archive Select the response which presents the three elements below in order of increasing first ionisation potential (IE1)
Select the response which presents the three elements below in order of increasing first ionisation potential (IE1)
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Select the response which presents the three elements below in order of increasing first ionisation potential (IE1).
Select one:
N, P, Si
N, Si, P
P, N, Si
P, Si, N
Si, N, P
Si, P, N
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The answer is: Si, P, N
For details answer please find the explanation section.
Step-by-step explanation
Sol. Fijust ionization energy ( IE) , of the element along the periodic table foll the tsuend- * ON going down from top to bottom in a Particle lar group the ionization energy value decreases. Since 'N' and p' belong to Gr- 15 and also w' is placed above ip, There force the (I.E)y of N atom is greater than 'p' atom. PC I . E 1 = 10"98 ) L N ( I. E 1 = 19. 53 RX ) Similarly on going from Lefto to right in a partiewar period ( I. E) , value increases. As sil and p' both belongs to and period also 'si' is placed left to the p' atom, The (I.E) 1 of 'silia lower than p'. Si ( I. F 1 = 8 . 15 ev ) L PCI.E 1 = 10148 ev) So, the increasing trend of (IFJy of the given element is. - Si LP LN so , and is :- Si , P, N
