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CHEM0205010
The diagram above shows an atom with 18 electrons. If 1 more electron is added into the atom, the atom will fall into which shell?
CHEM0205020
The figure above shows an atom with 14 electrons. The electron arrangement of the atom is
CHEM0205030
Given that a sodium atom has 11 electrons. Which of the followings shows the correct electrons arrangement of a sodium atom.
CHEM0205040
The figure shows the symbol of a carbon atom. Find the electrons arrangement of the carbon atom.
CHEM0205050
The number of proton, neutron and electron of a chloride ion are as below:
Number of protons | 17 |
Number of neutrons | 18 |
Number of electrons | 18 |
What is the electron arrangement of the chlorine ion?
CHEM0205060
Valence electrons are the electrons in the _______________ shell of an atom.
CHEM0205070
The figure shows the symbol of an aluminium atom. Find the number of valence electrons in the atom
CHEM0205080
One oxygen atom has 8 protons, 8 neutrons and 8 electrons. Which of the following statement is correct about oxygen atom?
CHEM0205090
The electronic arrangement of atom A is 2.8.18.7. We can conclude that atom A