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तमिलनाडु बोर्ड ऑफ सेकेंडरी एज्युकेशनएसएसएलसी (अंग्रेजी माध्यम) कक्षा ७

A compound containing one atom of carbon and two atoms of oxygen is ______.

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प्रश्न

A compound containing one atom of carbon and two atoms of oxygen is ______.

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उत्तर

A compound containing one atom of carbon and two atoms of oxygen is CO2 

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अध्याय 3: Matter Around Us - Evaluation [पृष्ठ ३८]

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सामाचीर कलवी Science - Term 1 [English] Class 7 TN Board
अध्याय 3 Matter Around Us
Evaluation | Q II. 2. | पृष्ठ ३८

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.


ANSWER IN DETAIL

State the postulates of the Dalton’s atomic theory.


Define:- Atom


Write the names of the elements present in the:-

Acetic acid


Write the names of `"Ca"("NO"_3)_2` compounds :


Fill in the blank

An excess of electrons produces a ________ charge.


An atom of an element X may be written as `""_9^4"X"`
(a) What does the figure 9 indicate?
(b) What does the figure 4 indicate?
(c) What is the number of protons in atom X?
(d) What is the number of neutrons in atom X?
(e) What is the number of electrons in atom X?
(f) How many electrons are there in the outermost shell of an atom of element X?
(g) Write the symbol of ion formed by an atom of element X.


How many atoms are there in exactly 12 g of carbon-12 element ? (C = 12 u)


Electron, proton, neutron are the types of ______ in an atom.


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.


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


The basic unit of matter is ______.


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

An atom is electrically neutral.


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


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

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


______ is a substance that is made up of three oxygen atoms chemically combined.


What are the 3 most abundant atoms on the earth?


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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