- (A) Uni-negative
- (B) Uni-positive
- (C) Di-negative
- (D) Di-positive
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- (A) Same number of neutrons
- (B) Same mass number
- (C) Same physical properties
- (D) Same chemical properties
- (A) High energy electron beam
- (B) ? – particle
- (C) X-rays
- (D) All of the above
- (A) H+ H H-
- (B) Li+ Na+ K+
- (C) C1- Br- I
- (D) F- Ne Na+
- (A) 1.6 x 10-27 kg
- (B) 1.6 x 10-24 kg
- (C) 1.6 x 10-26 kg
- (D) 1.6 x 10-28 kg
- (A) pressure
- (B) volume
- (C) moles
- (D) density
- (A) 5
- (B) 4
- (C) 3
- (D) 2
- (A) 0.5
- (B) 1
- (C) 1.5
- (D) 2
- (A) neutrons
- (B) protons and electrons
- (C) protons
- (D) protons and neutrons
- (A) Combustion method
- (B) Dumas method
- (C) Kjeldahls method
- (D) All of the above methods are for different purposes
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