Atoms and Atom Model
In radioactive decay, some isotopes release a small amount of energy which can be used to
fire up wood
generate electric current
light up a bulb
light up a whole town
generate electric current
Related posts
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
Leave a Reply