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QUESTION NUMBER 10
The occurrence of nitrogen as N^20, N^21 and N^33 is mainly due to ….?
A. Similar Atomic Number
B. Samse Mass Number
C. Difference in number of neutron
D. Difference in number of electrons
ANSWER: C
QUESTION NUMBER 11
The conjugate base of the acid H2CO3 is….?
A. H2CO3
B. CO2
C. HCO2
D. HCO2^3
ANSWER: D
QUESTION NUMBER 12
The continous emission of energy vy electrons spinning the orbit which can result in the ultimate collapse of the atom is associated with—– model of the atom?
A. Nuclear
B. Quantum
C. Point Mass
D. Plum pud
ANSWER: D
QUESTION NUMBER 13
An atom of an element with atomic number of 18 and mass number of 39 will likely contain….. number of electrons.
A. 20
B. 18
C. 19
D. 39
ANSWER: C
QUESTION NUMBER 14
In lewis theory an acid is defined as …… ?
A. Electron pair donor
B. Electron pair acceptor
C. Neutron Donor
D. Proton acceptor
ANSWER: B
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