मराठी
सी.आई.एस.सी.ई.आयसीएसई ICSE Class 7

A Radical Take Part – Unsplit in a Chemical Reaction and Retains Its Identity in Reactions. with Reference to the Radical – Ammonium Bisulphate Carbonate State the Group

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प्रश्न

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.

तक्ता
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उत्तर

Radical Representattion Group of atoms present in a radical
a. Ammonium NH4+ 1 atom of nitrogen;
4 atom of hydrogen
b. Bisulphate HSO41− 1 atom of hydrogen and sulphur;
4 atoms of oxygen
c. Carbonate CO3− − 1 atom of carbon;
5 atoms of oxygen
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  या प्रश्नात किंवा उत्तरात काही त्रुटी आहे का?
पाठ 4: Atomic Structure - Exercise

संबंधित प्रश्‍न

ANSWER IN DETAIL

How are isobars different from isotopes ?


Fill in the blank

An ion with positive charge is called ______


Define: Ions


What does an atom consist of ? Explain.


 Name the particles which revolve around the nucleus.


Name the particle or particles you would expect to find in :

The nucleus of an atom


An atom has 13 protons and 14 neutrons.

How many electrons would be present in this atom ?


Write the full form of IUPAC.


What value has been given to the mass of this reference atom ?


The electronic configuration of an element Z is 2, 8, 8.
(a) What is the atomic number of the element?
(b) State whether element Z is a metal or a non-metal.
(c) What type of ion (if any) will be formed by an atom of element Z? Why?
(d) What is special about the outermost electron shell of the atom of this element?
(e) Give the name and symbol of element Z.
(f) Name the group of elements to which Z belongs.


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


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

Which element will lose electron?


Select the correct answer to the statement given below:

The basic unit of matter is not capable of independent existence.


Select the correct answer to the statement given below:

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


K: Potassium:: C: ______.


Assertion: An atom is electrically neutral.

Reason: Atoms have equal number of protons and electrons.


Define the following term with an example.

Compound


The volume occupied by 4.4 g of CO2 at S.T.P ______


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


The ______ are combination of atoms of various elements or the same element.


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