(A) Normal periods
(B) Short periods
(C) Long periods
(D) Very long periods
Tag: Biochemistry
___ halegen have lowest electronegativity?
(A) Chlorine
(B) Fluorine
(C) Bromine
(D) Iodine
Which cell consists of three sub shells?
(A) L
(B) M
(C) N
(D) O
The molar mass of H2SO4 is?
(A) 98 amu
(B) 98 g
(C) 9.8 g
(D) 9.8 amu
___ element is found in most abundance in earth crust.
(A) Oxygen
(B) Aluminium
(C) Silicon
(D) Iron
Atomic number of Copper is?
(A) 26
(B) 27
(C) 28
(D) 29
What is the atomic mass of sulphure?
(A) 31
(B) 32.06
(C) 33.36
(D) 40.595
Atomic number of Neon is?
(A) 8
(B) 9
(C) 10
(D) 11