The atoms of the elements having same difference between mass number and atomic number are called ______.
Baking soda is used ______.
I. for making baking powder
II. in soda-acid fire extinguishers
III. to neutralize excess acid in the stomach
Which of the following is NOT a nucleon?
Which of the following represents an ion?
Which electron dot formula represents a polar molecule?
Which molecule contains a polar covalent bond?
A standard drink is generally
What is the other name of sodium carbonate?
What is the ratio of masses of hydrogen and oxygen in the water?
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