Introduction:
The
periodic table, also known as the periodic table of the elements, is a tabular
display of the chemical elements. It is widely used in chemistry, physics, and
other sciences, and is generally seen as an icon of chemistry.
Introduction:
The
periodic table, also known as the periodic table of the elements, is a tabular
display of the chemical elements. It is widely used in chemistry, physics, and
other sciences, and is generally seen as an icon of chemistry.
Which number of
the following is called atomic number of an element?
a) neutron
b) proton
c) shell
d) orbital
Which of the following must be different for an element?
a) mass number
b) atomic number
c) isotopes
d) all of these
The number of protons must be equal to the number of ……..in an atom.
a) neutrons
b) electrons
c) shell
d) orbital
Where electrons in atom of an element located?
a) inside the nucleus
b) in between shells
c) in energy level/shell
d) all of these
