(C) The number of neutrons is calculated as $N = A - Z$,where $A$ is the mass number and $Z$ is the atomic number.For carbon $(_{6}^{12}C)$: $N = 12 -

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(C) The number of neutrons is calculated as $N = A - Z$,where $A$ is the mass number and $Z$ is the atomic number.For carbon $(_{6}^{12}C)$: $N = 12 - 6 = 6$.For silicon $(_{14}^{28}Si)$: $N = 28 - 14 = 14$.The ratio of neutrons in $C$ to $Si$ is $6 : 14$,which simplifies to $3 : 7$.

Class 11 Chemistry Structure of Atom Atomic number, Mass number, Atomic species

Easy

The ratio between the number of neutrons in $C$ (atomic mass $12$) and $Si$ (atomic mass $28$) is

A
$2:3$
B
$3:2$
C
$3:7$
D
$7:3$

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Class 11

Chemistry Questions

Chapter

Structure of Atom

Subtopic

Atomic number, Mass number, Atomic species

Assertion : An atom is electrically neutral.
Reason : Atom contains equal number of protons and neutrons.

MediumAIIMS 1997

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Which of the following are identical in terms of their atomic number $(Z)$?
$(i)$ $Na$ and $Na^+$
$(ii)$ $F$ and $F^-$

Easy

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Isotopes are atoms having the same

Medium

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Identify the isoelectronic pair from the following.

EasyMHT CET 2025

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An element has an electronic configuration of $2, 8, 18, 1$. If its atomic weight is $63$,then how many neutrons will be present in its nucleus?

Easy

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The ratio between the number of neutrons in $C$ (atomic mass $12$) and $Si$ (atomic mass $28$) is

Similar Questions

Assertion : An atom is electrically neutral.Reason : Atom contains equal number of protons and neutrons.

Which of the following are identical in terms of their atomic number $(Z)$?$(i)$ $Na$ and $Na^+$$(ii)$ $F$ and $F^-$

Isotopes are atoms having the same

Identify the isoelectronic pair from the following.

An element has an electronic configuration of $2, 8, 18, 1$. If its atomic weight is $63$,then how many neutrons will be present in its nucleus?

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Assertion : An atom is electrically neutral.
Reason : Atom contains equal number of protons and neutrons.

Which of the following are identical in terms of their atomic number $(Z)$?
$(i)$ $Na$ and $Na^+$
$(ii)$ $F$ and $F^-$