Question

B) Give the name of : [03] 5. Another term for teenage. 6. Secretion of endocrine glands 7. Endocrine gland attached to brain II A) answer in one sentence only: [03] 8. How does a force arise? 9. What is friction? 10. Name two contact forces. B) Give reason scientifically: (any two) [03] 11. We are not crushed due to atmospheric pressure. 12. The sole of our shoe is grooved. 13. We should take enough Iodine rich food to prevent thyroid problems. C) Define the following: [02] 14. Hormones 15. Gravitational force. III A) Answer Briefly:(any two) [04] 16. What are the effects of force. 17. What is Adolescence. 18. Explain electrostatic force. B) Answer to the point : (any two ) [06] 19. The wheel is said to be one of the greatest inventions of mankind . Explain. 20. What things are to be followed to maintain an individual’s health? 21. How is the sex of the baby determined in human. ​

Answer 1

Answer:

Basic Description. The shape of the s orbital is a sphere; s orbitals are spherically symmetric. The nodes of s orbital is n-1; the angular nodes is l, which is 0 for all s orbitals; the radial nodes is n-l-1, which is n-1 for all s orbitals.