What is the atomic number of Calcium?
...What is the atomic number of Calcium?
17
18
19
20
Correct answer is D
No explanation has been provided for this answer.
The reaction between hydrogen and iodine may be represented by the equation H2(g)+ I2(g) → 2HI(...
The colour of methyl orange in alkaline medium is? ...
Which of the following salts can be prepared by reacting the metal with dilute H2SO4?...
Which of the following substances is a mixture? ...
A substance responsible for the sour taste of unripe orange is ...
Which of the following industrial processes depends on the action of enzymes? ...
HNO3 does not usually react with metals to liberate hydrogen because HNO3 is ...