10.

~ Calculate the formal charge of 5 atom in 50.

028/22

. What is the shortest wavelength line (in nm) in the Lyman series of hydrogen spectrum ?

A) 91.2 nm B) 22.6 nm ©) 121.5 nm D) 34.2 nm

. The dipole moment of HCI is 1.03 D and distance between atoms is 127 pm. What

is the percentage ionic character of HCI bond ?
A) 6.09 % B) 60.9 % C) 609.11% 0) 16.9%

A) +1 8) -1 Cc) 0 D) +4

. Which of the following molecules has highest value of percentage s-character for

the central atom ?
A) XeO, 8) 8௩ C) BeF, D) SF,

. Wave functions of electrons in atoms and molecules are called

A) orbit B) orbitals

C) probability D) all the above

. 1 8111८ = _ gm.

^) 1.6124 8( 9 60 7 0( 11858

. The electronic configuration of an element is 152 252 208 305 461. This represent

its
A) excited state B) ground state
C) cationic form D) anionic form

. The set representing correct order of first ionization energy is

A) K>Na>Li B) Be>Mg>Ca
©) B>C>N D) Ge>Si>C

. Halogen that can be easily reduced

A) ‏وا‎ B) Bry C) ०७ D) Fp

The number of P-O-P bonds in cyclic metaphosphoric acid is
A) zero B) two C) three D) four

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