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तामिळनाडू बोर्ड ऑफ सेकेंडरी एज्युकेशनएस.एस.एल.सी. (इंग्रजी माध्यम) इयत्ता ७

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

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प्रश्न

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

थोडक्यात उत्तर
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उत्तर

Structure of an atom.

Position of the subatomic – particles.
Atom consist of three sub-atomic.
Particles: 1. Protons, 2. Electrons, 3. Neutrons

  1. The nucleus of the atom contains the protons (positively charged) and the neutrons (no change)
  2. The outermost regions of the atom are called electron shells and contain the electrons (negatively charged)
  3. The protons have a positive charge while neutrons have a neutral charge.
  4. Electrons circle around the nucleus of an atom, they are negatively charged.
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पाठ 4: Atomic Structure - Evaluation [पृष्ठ ५२]

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सामाचीर कलवी Science - Term 1 [English] Class 7 TN Board
पाठ 4 Atomic Structure
Evaluation | Q IX. 1. | पृष्ठ ५२

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:- 

Glucose


 Fill in the blank:

Atoms are _____


Define: Relative atomic mass


What does an atom consist of ? Explain.


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


How did Neils Bohr visualise the atom ?


Why is it not possible to see an atom even with the most powerful microscope ?


In what respects do the three isotopes of hydrogen differ? Give their structures.


Draw diagrams representing the atomic structures of the following:

  1. Sodium atom
  2. Chlorine ion
  3. Carbon atom
  4. Oxygen ion

Draw the electron dot structure of this compound. 


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


The electronic structure [configuration] of fluorine can be written as 2, 7. In a similar way give the electronic configuration of aluminium


The electronic structure [configuration] of fluorine can be written as 2, 7. In a similar way give the electronic configuration of phosphorus


Rewrite the given sentence in correct form.

Elements contain two or more kind of atoms and compounds contain only one kind of atom.


State true or false. If false, correct the statement.

An atom is electrically neutral.


Define the following term with an example.

Metal


Atoms of different elements having ______ mass numbers, but ______ atomic numbers are called isobars. 


Write any two observations which support the fact that atoms are divisible.


The most abundant type of atom is the universe is ______.


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