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सी.आई.एस.सी.ई.आईसीएसई ICSE Class 7

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

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प्रश्न

Fill in the blank

A deficiency of electrons produces a ________ charge.

रिक्त स्थान भरें

उत्तर

A deficiency of electrons produces a positive charge.

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अध्याय 4: Atoms, Molecules and Radicals - Additional questions

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सेलिना Concise Chemistry [English] Class 7 ICSE
अध्याय 4 Atoms, Molecules and Radicals
Additional questions | Q 23.6

संबंधित प्रश्न

If bromine atom is available in the form of, say, two isotopes `""_35^79Br (49.7%)" and """_35^81Br (50.3%)`, calculate the average atomic mass of bromine atom.


Write the names of the elements present in the:- 

Ammonia


 Fill in the blank:

Atoms are _____


Name three non-metals/radicals which have valency -1, -2, and -3.


An atom has 13 protons and 14 neutrons.

What is the atomic number of the atom ?


An atom has 13 protons and 14 neutrons.

How many electrons would be present in this atom ?


Write the full form of IUPAC.


How is the size of an atom indicated ?


What is an atom ? How do atoms usually exist ?


Name the gas that.

Turns moist starch iodide paper blue black.


Draw the diagrams representing the atomic structures of the following: Neon


A radical take part – unsplit in a chemical reaction and retains its identity in reactions.
With reference to the radical –

  1. ammonium
  2. bisulphate
  3. carbonate

state the group of atoms present in each radical.


Select the correct answer to the statement given below:

Imaginary path around the nucleus of an atom in which electrons revolve.


The smallest particle of matter that can exist by itself is ______.


Name the sub-atomic particles.


Draw the structure of an atom and explain the position of the sub-atomic particles.


You are provided with a fine white coloured powder which is either sugar or salt. How would you identify it without tasting?


Atomic models have been improved over the years. Arrange the following atomic models in the order of their chronological order

  1. Rutherford’s atomic model
  2. Thomson’s atomic model
  3. Bohr’s atomic model

An atom of Oxygen (O) and two atoms of hydrogen (H.) combine to form a molecule of ______.


A small block slides down on a smooth inclined plane, starting from rest at time t = 0. Let Sn be the distance travelled by the block in the interval t = n – 1 to t = n. Then, the ratio `S_n/(S_(n + 1))` is ______.


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