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(N/A) $(i)$ Some elements possess fractional atomic mass because they occur in nature in different isotopic forms. The atomic mass of an element is ca

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(N/A) $(i)$ Some elements possess fractional atomic mass because they occur in nature in different isotopic forms. The atomic mass of an element is calculated as the weighted average of the masses of its naturally occurring isotopes.
$(ii)$ Isotopes of an element have similar chemical properties because they possess the same atomic number and the same number of valence electrons,which determine the chemical behavior of an atom.
$(iii)$ Noble gases are inert because the outermost shell of their atoms is completely filled with electrons (stable octet/duplet configuration). Consequently,they do not show affinity towards chemical reactions.

Particle	Electrons	Protons	Neutrons
$M$	$2$	$3$	$4$
$N$	$10$	$9$	$10$
$O$	$8$	$8$	$8$
$P$	$8$	$8$	$10$

State reasons for the following statements:
$(i)$ Some elements possess fractional atomic mass.
$(ii)$ Isotopes of an element have similar chemical properties.
$(iii)$ Noble gases are inert.

Similar Questions

What information do you get from the figure about the atomic number,mass number,and valency of atoms $X$,$Y$,and $Z$? Give your answer in a tabular form.

Study the table given below and answer the questions that follow:

Particle Electrons Protons Neutrons

$M$ $2$ $3$ $4$

$N$ $10$ $9$ $10$

$O$ $8$ $8$ $8$

$P$ $8$ $8$ $10$

$(a)$ Write the mass numbers of particles $M, N, O$ and $P$.
$(b)$ Select a cation and an anion from the above table.

Dalton's atomic theory successfully explained:
$(i)$ Law of conservation of mass
$(ii)$ Law of constant composition
$(iii)$ Law of radioactivity
$(iv)$ Law of multiple proportions

Write the atomic number of an element which has mass number $23$ and number of neutrons $12$ in the nucleus.

Why do Helium,Neon and Argon have a zero valency?

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State reasons for the following statements:$(i)$ Some elements possess fractional atomic mass.$(ii)$ Isotopes of an element have similar chemical properties.$(iii)$ Noble gases are inert.