Question

The three subatomic particles of atoms are - electrons, protons and neutrons. An element
consists of atoms which have same number of protons in their nuclei. This is known as atomic
number ( Z) of an element. The sum of protons and neutrons in nucleus is called as its mass
number (A). An element X can be indicated as: Axz.
i) Y is found in the nucleus of an atom and is electrically neutral. Y is
a) proton b) electron c) neutron d) both a and b

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Answer 1

Answer:-

We know that,

If X is an element, A is its atomic number and Z is its Atomic mass.

It can be written as $X_{Z}^{A}$ .

∵ Y is found in the Nucleus of an atom and it is Electrically Neutral.

∴ Y is Neutron, because Neutron is electrically neutral in nature.

Thus, Option (c) is correct.

Some Important Terms:-

• Number of Protons in an atom = Atomic number of that element

• Sum of Proton and Neutron of an atom = Atomic mass of that element

• Protons and Neutrons together called Nucleon.

• Number of Electron in an atom = Atomic number of an element, If the element is electrically neutral in nature.

• If in chemical reaction the atom will gain or loss Electrons then the atom become Ion.

• If the atom gain Electrons then it will called Anions or Negatively charged Ions.

• If the atom Loss Electrons then it will called Cations or Positively charged Ions.

Answer 2

Answer:

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