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तमिलनाडु बोर्ड ऑफ सेकेंडरी एज्युकेशनएसएसएलसी (अंग्रेजी माध्यम) कक्षा ७

State true or false. If false, correct the statement. An atom is electrically neutral. - Science

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प्रश्न

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

An atom is electrically neutral.

विकल्प

  • True

  • False

MCQ
सत्य या असत्य
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उत्तर

An atom is electrically neutral- True

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  क्या इस प्रश्न या उत्तर में कोई त्रुटि है?
अध्याय 4: Atomic Structure - Evaluation [पृष्ठ ५१]

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सामाचीर कलवी Science - Term 1 [English] Class 7 TN Board
अध्याय 4 Atomic Structure
Evaluation | Q IV. 3. | पृष्ठ ५१

संबंधित प्रश्न

ANSWER IN DETAIL

Enlist the features of Bohr’s model of an atom. How did he correct the Rutherford’s model ?


Write the names of `("NH"_4)_2"SO"_4` compounds:


 Name the particles which revolve around the nucleus.


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

What is the atomic numebr of X ?


Fill in the blank

An excess of electrons produces a ________ charge.


Fill in the blank

A deficiency of electrons produces a ________ charge.


Write the full form of IUPAC.


How many times is a proton heavier than an electron?


For the symbols H, D and T, write the subatomic particles (protons, neutrons and electrons) found in each one of them.


Calculate the number of moles in 12.044 × 1025 atoms of phosphorus.


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

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


Rewrite the given sentence in correct form.

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


Assertion: An atom is electrically neutral.

Reason: Atoms have equal number of protons and electrons.


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.


1 mole of Gold and Silver contain same number of atoms.


Give the salient features of “Modern atomic theory”.


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 ______.


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