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सी.आई.एस.सी.ई.आईसीएसई ICSE Class 8

The Diagram Represents an Isotope of Hydrogen H. Are Isotopes Atoms of the Same Element Or Different Elements. - Chemistry

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प्रश्न

The diagram represents an isotope of hydrogen [H]. Answer the following:


Atomic no. = 1
Mass no. = 1

Are isotopes atoms of the same element or different elements.

एक पंक्ति में उत्तर

उत्तर

Isotopes atoms are of the same element.

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अध्याय 4: Atomic Structure - Objective type questions

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विराफ जे दलाल New Simplified Middle School Chemistry [English] Class 8
अध्याय 4 Atomic Structure
Objective type questions | Q 3.1

संबंधित प्रश्न

 Give the following a suitable word/phrase.

Atoms of same element with same atomic number but a different mass number.


What is variable valency? Name two elements having variable valency and state their valencies.


From the symbol `""_15^31"P"`, state :
(i) mass number of phosphorus,
(ii) atomic number of phosphorus, and
(iii) electron configuration of phosphorus.


An element A atomic number 7 mass numbers 14
B electronic configuration 2,8,8
C electrons 13, neutrons 14
D Protons 18 neutrons 22
E Electronic configuration 2,8,8,1

State Valency of each element

An element A atomic number 7 mass numbers 14

B electronic configuration 2,8,8

C electrons 13, neutrons 14

D Protons 18 neutrons 22

E Electronic configuration 2,8,8,1

State (i) Valency of each element (ii) which one is a metal (iii) which is non-metal (iv) which is an inert gas


If an atom ‘A’ has atomic number 19 and mass number 39, state –

  1. Its electronic configuration.
  2. The number of valence electrons it possesses.

Draw the atomic diagram of the following element showing the distribution of – protons, neutrons and the electrons in the various shell of the atom.

Argon – \[\ce{^40_18Ar}\]

[The upper number represent the – mass number and the lower number represent the – atomic number e.g. calcium – mass number = 40, atomic number = 20]


Elements X, Y, Z have atomic numbers 6, 9 and 12 respectively. Which one:

  1. forms anion – negative ion;
  2. forms cation – positive ion;
  3. has 4 electrons in the outermost orbit. [Y, Z, X]

Atomic number : ______ :: Mass number : Number of protons and neutrons.


Compare the charge and mass of protons and electrons.


An element has 2 electrons in its N shell.

What is its atomic number?


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