Which is known as carbolic acid?
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Electrons in the highest energy level of an atom are called ________.
Which one of the following triad represents Dobereiner's Triad?
Phosphorus is kept in water because
Atomic number of which of the following elements is greater than that of Magnesium
The atoms of the elements having same difference between mass number and atomic number are called ______.
Which among the following has highest electron affinity?
Anions are formed by _____.