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Recent questions tagged molecules
+1
vote
1
answer
Name one ion for each of the valencies +1, +2 and +3.
asked
Apr 3, 2019
in
JEE
by
kratos
coordination compounds
structure of the atom
molecules
jee
class-9
class-7
icse
class-10
jee mains
atoms
periodic classification of elements
+2
votes
1
answer
What is the electric charge on an atom?
asked
Mar 31, 2019
in
Class 12
by
kratos
cbse
molecules
class-7
icse
class-12
atoms
nuclei
+1
vote
1
answer
Valency of iron
asked
Mar 26, 2019
in
Class 9
by
kratos
molecules
class-9
class-7
atomic structure
icse
atoms and molecules
atoms
+3
votes
1
answer
How did Neils Bohr visualize the atom ?
asked
Mar 24, 2019
by
kratos
molecules
class-7
icse
atoms
+1
vote
1
answer
(a) Name the particles which revolve around the nucleus. (b) What are orbits or shells ?
asked
Mar 22, 2019
by
kratos
molecules
class-7
icse
atoms
+2
votes
1
answer
What is meant by the term chemical formula?
asked
Mar 13, 2019
in
Class 9
by
kratos
cbse
molecules
class-9
class-7
icse
atoms
+1
vote
1
answer
Define : 1. An Atom 2. Atomic number
asked
Mar 11, 2019
by
kratos
molecules
class-7
icse
atoms
+1
vote
1
answer
Define Tetra-atomic.
asked
Mar 10, 2019
in
Class 9
by
kratos
cbse
molecules
class-9
class-7
icse
atoms
+3
votes
1
answer
When was Dalton'* atomic theory?
asked
Mar 8, 2019
in
Class 9
by
kratos
cbse
molecules
class-9
class-7
icse
atoms
+2
votes
1
answer
The valency of calcium is 2. Write the valencies of other ******* in the following :
asked
Feb 28, 2019
in
Chemistry
by
kratos
class-8
molecules
language of chemistry
class-9
class-7
icse
atomic structure
chemical bond and chemical equation
atoms
+1
vote
1
answer
Define Diatomic.
asked
Feb 28, 2019
in
Class 9
by
kratos
class-9
molecules
atoms
cbse
+1
vote
1
answer
Two elements X and Y have — (i) X has 17 protons 18 neutrons (ii) Y has 17 protons and 20 neutrons Both X and Y are—
asked
Feb 24, 2019
in
Class 10
by
kratos
cbse
properties of elements
structure of the atom
atomic theory
molecules
class-9
class-10
periodic classification
icse
class-7
atoms
periodic classification of elements
+1
vote
1
answer
Define Anions.
asked
Feb 20, 2019
in
Class 9
by
kratos
class-9
molecules
atoms
cbse
+2
votes
1
answer
Define the term Molar mass.Give Example.
asked
Feb 14, 2019
in
Class 9
by
kratos
cbse
molecules
class-9
class-7
icse
atoms
+3
votes
1
answer
(a) What is the number of electrons donated by a magnesium atom and number of electrons accepted by a sulphur atom during their chemical combination?
asked
Feb 7, 2019
by
kratos
molecules
class-7
icse
atoms
+3
votes
1
answer
What is Law of Constant Proportion? Explain its.
asked
Feb 5, 2019
in
Class 9
by
kratos
class-9
molecules
atoms
cbse
+2
votes
1
answer
Describe the Atomic Mass.
asked
Jan 30, 2019
in
Class 9
by
kratos
cbse
molecules
class-9
class-7
icse
atoms
+2
votes
1
answer
Explain the conservation of mass.
asked
Jan 20, 2019
in
Class 9
by
kratos
class-9
molecules
atoms
cbse
+3
votes
1
answer
Give the symbols and valencies of following ********: (a) Hydroxide (b) Chloride
asked
Jan 17, 2019
in
Chemistry
by
kratos
class-8
molecules
language of chemistry
class-7
icse
atoms
+2
votes
1
answer
What do you mean by Mole concept?
asked
Jan 16, 2019
in
Class 9
by
kratos
cbse
molecules
class-9
class-7
icse
atoms
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