Why is symbol considered short form of an element?
A symbol represents a short form of a/an ________ [atom/ element/ molecule].
Explain why, hydrogen and oxygen are considered elements whereas water is not considered an element.
The atomic number of an element X is 16. The symbol of ion formed by an atom of the symbol of ion formed by an atom of this element will be: (a) X3−
(b) X2+
(c) X2−
(d) X−
A symbol represents the short form of a/an