Which of the following group is NOT Dobereiner Triads?
______ bond holds the atoms together within a water molecule.
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Pyrolusite is an ore/mineral of ___________.
Which of the following elements has the lowest melting point?
The Chemical formula of Ammonium chloride is ___________.
What chemical is injected into a person's body when an ant bites?
_____ is the fourth state of matter.
Which of the following is not a Halon gas ?