Question

The element having no neutron in the nucleus of its atom is:
A.Hydrogen
B.Nitrogen
C.Helium
D.Boron

Answer 1

The atomic nucleus is the small, dense region which consists of protons and neutrons at the center of an atom. Moreover, the protons are positively charged particles whereas neutrons are electrically neutral.

Complete step by step answer:
The atomic structure refers to the structure of the atom consisting of nucleus in which the protons and neutrons are present. Moreover, the negatively charged particles are known as electrons and they revolve around the center of the nucleus.
However, the atoms of different elements have different atomic structures because they contain different numbers of protons and electrons.
Now, the element having no neutron in the nucleus of its atom is hydrogen. Its atomic number is one and it consists of a single proton and exists in diatomic form. Moreover, some properties of this element are listed below:
It is present in water and in almost all the molecules in living things. It remains bonded with carbon and oxygen atoms.
It is one of the most abundant elements on Earth.
It is an odorless and colorless gas with the lowest density among all gases.
It is named as an energy carrier because it can store some kind of energy which is created somewhere else.
It was artificially produced in the 16th century. It was named as hydrogen and its Greek name is ‘water former’.

Hence, option A is correct.

Note:
Hydrogen finds a variety of applications due to its dual nature. It is used in the synthesis of ammonia and in the manufacture of nitrogenous fertilizers. Moreover, it can reduce many metal oxides to metals by metallurgical processes. It is also used as rocket fuel in many space research activities.