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सी.आई.एस.सी.ई.आयसीएसई ICSE Class 7

Fill in the Blank a Deficiency of Electrons Produces A...............Charge.

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प्रश्न

Fill in the blank

A deficiency of electrons produces a ________ charge.

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उत्तर

A deficiency of electrons produces a positive charge.

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पाठ 4: Atomic Structure - Additional questions

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एस.पी. सिंह Concise Chemistry [English] Class 7 ICSE
पाठ 4 Atomic Structure
Additional questions | Q 23.6

संबंधित प्रश्‍न

Tick the most appropriate answer.

Who discovered that radioactive rays are given out by uranium?

  1. Henri Becquerel
  2. Marie Curie
  3. Pierre Curie
  4. Schmidt

Write the names of the elements present in the :- 

Sulphuric acid


Write the names of the elements present in the:- 

Glucose


Write the names of the elements present in the:-

Sodium hydroxide


Write the names of `"FeS"` compounds :


 Give the charge and the mass of an electron, proton and neutron present in an atom ?


Write electronic configuration of oxygen, fluorine, sodium, silicon, argon.


A certain particle ‘X’ has 17 protons, 18 electrons and 20 neutrons.

What is the charge on the particle ?


Write the full form of IUPAC.


Name the three subatomic particles present in an atom.


The electron shell ______ is nearest to the nucleus.


Match the pairs.

Group 'A' Group 'B'
a. Proton i. Negatively charged
b. Electron ii. Neutral
c. Neutron iii. Positively charged

Deduce from the datum provided.

Datum To deduce
\[\ce{_11^23Na}\] Neutron number
\[\ce{_6^14C}\] Mass number
\[\ce{_17^37 Cl}\]  Proton number

What is the contribution of the following in atomic structure?
Maharshi Kanada


Elements X and Y have 1 and 7 electrons in their outermost shell respectively.

Which will form positive ion?


State the meaning of the term – (a) atom, (b) molecule, (c) radical – with a suitable example.


An atom of an element has no electron. Will that atom have any mass or not? Can an atom exist without electron? If so then give example.


Atoms of different elements having the same number of ______ are called isotones.


A sample of vitamic C is known to contain 2.58 ×1024 oxygen atoms. How many moles of oxygen atoms are present in the sample?


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