Symbol of an element represents:
One molecule of the element
One ion of the element
12 u of an element
One atom of the element
Symbol of an element represents one atom of the 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−
The number of protons in the nucleus of one atom of an element Y is 5. The symbol of ion formed by an atom of this element will be:
(a) Y3−
(b) Y2+
(c) Y2−
(d) Y3+
The number of atoms present in one molecule of an element is called as: