Chemistry (F.Sc)

Q: Which of the following terms is not used for ionic compound?

(a) :  formula unit
(b) :  empirical formula
(c) :  molecular formula
(d) :  formula mass
(e) :  None
Answer:  molecular formula
Explanation:  

Q:

The energy of an electron in the first Bohr orbit of
H atom is 13.6eV . The possible energy v alue(s) of the
excited state(s) for electrons in Bohr orbits to hy drogen
is(are)

(a) :  3.4eV
(b) :  4.2eV
(c) :  6.8eV
(d) :  6.8eV
Answer:  3.4eV
Explanation:  
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