(a) Where is the nucleus of an atom situated ? (b) What are orbits or

1.	(a) Where is the nucleus of an atom situated ? (b) What are orbits or shells of an atom ? (c)What are isotopes ? How does the existence of isotopes contradict Dalton's atomic theory ?
Answer» (a) Where is the nucleus of an atom situated ? (b) What are orbits or shells of an atom ? (c)What are isotopes ? How does the existence of isotopes contradict Dalton's atomic theory ?

(a) Where is the nucleus of an atom situated ? (b) What are orbits or shells of an atom ? (c)What are isotopes ? How does the existence of isotopes contradict Dalton's atomic theory ?

Answer»

(a) Where is the nucleus of an atom situated ?

(b) What are orbits or shells of an atom ?

(c)What are isotopes ? How does the existence of isotopes contradict Dalton's atomic theory ?