Atoms and Atom Model
The radiation is released in a process known as
radioactive explosion
radio decay
radioactive decay
radiation release
radioactive decay
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The smallest atom in ‘periodic table’ yet found isA. hydrogen
B. helium
C. lithium
D. magnesium
The symbol of “Boron” is
A. Bo
B. C
C. N
D. Br
When shell L is completed, next electron moves to
A. shell M
B. shell S
C. shell P
D. shell F
The ionic chemical formula of ‘chlorine’ is
A. Cl–
B. Cl+
C. Cl–
D. Cl+
The symbol of Nitrogen is
A. Bo
B. C
C. N
D. Br
The number of protons and electrons in an atom of uranium is
A. 90
B. 91
C. 92
D. 94
To study the changes that occur during photosynthesis,
A. carbon-12 is added to carbon dioxide
B. carbon-13 is added to carbon dioxide
C. carbon-14 is added to carbon dioxide
D. carbon-14 is added to carbon monoxide
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