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Question 1 of 10
1. Question
1 point(s)CHEM10203010
Which of the following is not a correct use of radioisotope?
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Question 2 of 10
2. Question
1 point(s)The maximum number of electrons can be filled into the second shell of an atom is _____.
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Question 3 of 10
3. Question
1 point(s)
The diagram shows an atom with 18 electrons. If 1 more electron is added into the atom, the atom will fall into which shell?
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Question 4 of 10
4. Question
1 point(s)
The figure shows an atom with 14 electrons. The electron arrangement of the atom is
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Question 5 of 10
5. Question
1 point(s)
The figure shows the symbol of a carbon atom. Find the arrangement of the electrons of the carbon atom.
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Question 6 of 10
6. Question
1 point(s)One oxygen atom has 8 protons, 8 neutrons and 8 electrons. Which of the following statement is correct about oxygen atom?
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Question 7 of 10
7. Question
1 point(s)The table below describes the structures of four particles.
Particle O O2- Na Na+ Number of
protons8 8 11 11 Number of
neutrons8 8 Y 12 Number of electrons 8 X 11 Z What are the correct values of X, Y and Z?
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Question 8 of 10
8. Question
1 point(s)The table below shows the number of protons for elements P, Q, R, S and T.
Element Number of protons P 3 Q 8 R 12 S 11 T 20 Which of the following pair of elements have the same number of valence electrons in their atom?
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Question 9 of 10
9. Question
1 point(s)Table below shows the number of neutrons, protons and electrons of particles X and Y.
Particle
ZarahNumber of
neutrons
Bilangan neutronNumber of
proton
Bilangan protonNumber of
electrons
Bilangan elektronX 12 12 12 Y 12 12 10 Which of the following is true about X and Y?
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Question 10 of 10
10. Question
1 point(s)The nucleus of an atom contains
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