The enthalpies of elements in their standard states are taken as zero. The enthalpy of formation of a compound
(i) Is always negative
(ii) Is always positive
(iii) May be positive or negative
(iv) Is never negative
The enthalpies of elements in their standard states are taken as zero. The enthalpy of formation of a compound
(i) Is always negative
(ii) Is always positive
(iii) May be positive or negative
(iv) Is never negative
This is a Multiple Choice Questions as classified in NCERT Exemplar
option (iii)
The enthalpies of elements in their standard states are taken as zero. The enthalpy of formation of a compound as the reaction could be exothermic or endothermic.
Upvote 
Similar Questions for you
Kindly go through the solution
(1) [Ni (NH3)6]+2 → Ni+2 → d8, C. No. = 6,
SP3d2, Para
(2) [Co (H2O)6]+2 → Co+2 → d6, C. No. = 6
d2sp3, Dia
(3) [Ti (H2O)6]+3 → Ti+3 → d1, C. No. = 6
d2SP3, Para
(4) [Co (NH3)6]+3 → Co+3 → d5, C. No. = 6
d2sp3, Para
Taking an Exam? Selecting a College?
Get authentic answers from experts, students and alumni that you won't find anywhere else.
On Shiksha, get access to
Learn more about...
Chemistry NCERT Exemplar Solutions Class 11th Chapter Six 2025
View Exam DetailsMost viewed information
SummaryDidn't find the answer you were looking for?
Search from Shiksha's 1 lakh+ Topics
Ask Current Students, Alumni & our Experts
Have a question related to your career & education?
See what others like you are asking & answering