MEDIUM
9th CBSE
IMPORTANT
Earn 100

What are the postulates of Bohr's model of an atom? 

Important Questions on Structure Of The Atom

HARD
9th CBSE
IMPORTANT
NCERT Exemplar Science - Class 9>Chapter 4 - Structure Of The Atom>Long Answer Questions>Q 42
Show diagrammatically, the electron distributions in sodium atom and sodium ion, and also give their atomic number.
HARD
9th CBSE
IMPORTANT
NCERT Exemplar Science - Class 9>Chapter 4 - Structure Of The Atom>Long Answer Questions>Q 43
In the Gold foil experiment of Geiger and Marsden, that paved the way for Rutherford's model of an atom, ~ 1.00 % of the α -particles were found to deflect at angles >50° If one mole of α-particles were bombarded on the gold foil, compute the number of α-particles that would deflect at angles less than 50° .