Question 31. What does one understand by bond pairs and lone pairs of electrons? Illustrate by giving one illustration of each variety.
Practice ISC 12th dilemma papers to learn the exam pattern, marking plan and issue standard of queries requested in former several years.
II. Light ray suffers refraction at the point of incidence and at The purpose of emergence when passing from the prism.
(a) What on earth is the advantage of possessing a lot of villi about the internal surface of smaller intestine ?
Rationalization: When light-weight enters a triangular prism from just one area, the angle of incidence is i1 , and when it emerges from the other area from the prism, the angle of emergence is i2 .
Reply: (d) inversely proportional to its duration but directly proportional on the square root of your
29. Somebody writes a letter to four of his friends. He asks Every single one of these to copy the letter and mail it to 4 unique folks Together with the instruction which they go the chain in the same way.
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Respond to: The weather in a gaggle have very same valence shell Digital configuration and therefore have related physical and chemical Houses.
Learners who a short while ago passed Class 10 will select their respective subjects and streams in Class eleven. This tends to established the course of your career, so you need to examine with aim and determination.
Clarification: This means that a longer string will vibrate in a lessen frequency, and a string with higher rigidity will vibrate at the next frequency.
In this particular point out the value of ionization enthalpy and electron get enthalpy are not influenced through the presence of another atoms. It is not possible to express these if the atoms are during the ; liquid or reliable state because of the existence of inter atomic forces.
Chemistry is much more than the language of Science. We've produced absolutely sure that our options mirror the same. We purpose to help the students with answering the inquiries correctly, using logical method and methodology.
In contrast, the elements of group 17 have 7 electrons inside their ICSE Class 11 Physics respective valence shells and so have solid tendency to accept yet one more electron to make secure configuration. It can be linked with electron achieve enthalpy and electronegativity. Because both equally of these decreases down the group, the reactivity hence decreases.