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write 5-6 differences between isobars and isotopes in a tabular form .
what is the difference between sodium ion and sodium atom ?
how to find valency of an element?
Calculate the energy associated with photon of light having wavelength 6000 Angstrom . [ h = 6.624 x 10-27 erg - sec ]
Please help and explain .
what were the drawbacks of thomson model of atom
If Z = 3, what would be the valency of the element? Also, name the element.
Calculate the number of molecules in 8g of Oxygen ?
find the valency of sulphur .[atomic no.=16
if K and L shells of an atom ar full,then what would be the total number of electrons in an atom???
what are canal rays ?
Q :If number of electrons in an atom is 8 and number of protons is also 8, then (i) what is the atomic number of the atom and (ii) what is the charge on the atom?
ANS:(i) The atomic number is equal to the number of protons. Therefore, the atomic number of the atom is 8.
(ii) Since the number of both electrons and protons is equal, therefore, the charge on the atom is 0.
My Q: Why is the charge on the atom 0????
5 examples of isotopes and 5 examples of isobars
What is the valency of copper?
EXPLAIN THE LAW OF CONSERVATION OF MASS WITH AN EXAMPLE ?
Compare the properties of electrons, protons and neutrons.
Why does Anode Rays depend on the nature of the gas present in the discharge tube ?
what are the application of isotopes
Differentiate between Isotopes and Isobars. How are they related to atomic mass ?
What are the drawbacks of Rutherfords atomic model?
difference between electrons protons and neutrons...also find the relation between the three
Q.1. How many molecules are present in
(a) 9 grams of water
(b) 17 grams of amonia
Q.2. Calculate the number of moles in 17 grams of H2O2
Q.3. Show that 12 grams of carbon-12 contains 6.023 x 1023 atoms of 12C
Q.4. What is the mass of one atom of hydrogen ?
Q.5. How many moles of Mg atoms are there in 100 grams of magnesium ?
Q.6. Neon gas consist of single atoms. What mass of neon contains 6.023 x 1023 atoms ?
An atom 'M' of an element reacts with oxygen to form M2O3. Calculate the valency of element 'M'.
Who discovered proton? Golstein or Rutherford?
Q1 Tabulate name of elements,their latin names and symbols.
what is electrovalency and covalency
explain the rutherford's gold foil experiment with the help of diagram?
(a) What are isobars? Give one example. (b) Write any two uses of isotopes
Write two differences between isobars and isotopes.
why is the valency of phosphorus 3 & 5 both ?
can someone give the answers plz...................
How to learn the 30 elements of modern periodic table Quickly?
Write any 5 characteristics of Canal Rays ?
Calculate the no. of atoms of each element persent in 9.8 g of sulphuric acid, H2SO4. (H=1, S=32, O=16)
what r the rules of distribution of electrons in different shells of an atom.Pls give me all rules of higher classes also.
What is the valency of Aluminium whose atomic number is 13 ? Give reason.
what is the valency of gold, silver and lead and can you explai how we can find the valency of a compound like NH4, SO2, CO3 etc.
what are properties of anode rays x rays cathode rays and alpha particles
wht r d drawbacks of bohr's model of an atom??
What happens when an electron jumps from lower to higher energy levels?
Give 6 examples of isobars .........
Calculate number of neutrons present in 12 × 1025 atoms of oxygen (8O17). (Given NA = 6 × 1023 atoms)
(A) 1800 (B) 1600 (C) 1800 NA (D) 3200 NA
discovery of electrons
valency of carbon in CH4 , C2H6 , C2H4 , C2H2 ???
State any four general characteristics of isotopes.
Calculate the percentage of
[a] Water of crystallization in CuSO4.5H2O
[B] Potassium in K2CO3
[c] Oxygen in 22g of CO2
[D] Hydrogen in 36g of water
State 3 characteristics of canal rays.
State two main postulates of Thomson model of an atom
applications and examples of isotopes an isobars ?
the description of atomic particles of two elements X and Y is given below:
X Y
protons 8 8
neutrons 8 9
electrons 8 8
i) what is the atomic number of Y?
ii) what is the mass number of X?
iii) what is the relation between X and Y?
iv) which element/elements do they represent?
v) write the electronic configuration of X.
vi) write the cation/anion formed by the element.
nucleus of an atom is heavy and positively charged? (give reasons)
what is difference between Isotopes, Isobars and Isotones
influenza and common cold spread faster and is difficult to control explain
give the atomic masses of important element for class 9
The nuclear radius is of the order of 10
-13 cm while atomic radius is of the order 10-8 cm. Assuming the nucleus and the atom to be spherical, what fraction of the atomic volume is occupied by the nucleus ?
How many electrons can fit into the sub-shell for which n = 3 and l = 1? options:
an element X forms an oxide with formula X2O3
state the valency of X,write the formula of chloride of X and sulphate of X.
difference between isotope and isobars
The electronic configuration of potassium(K) is 2,8,8,1 instead of 2,8,9 thogh the M shell can accommodate up to 18 electrons. Explain
what are isobers, isotopes, isotones
who discovered the proton? E. goldstein or rutherford?
what is absolute mass and charge of an proton ,neutron and elrctron
write three significant features of Bohr's model of an atom.
how many molecules are present in
a) 9g of water
b) 17g of ammonium
Name three feature of rutherford's model
what are cathode rays and anode rays?
HOW CAN I CALCULATE VALENCY?
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Syllabus
write 5-6 differences between isobars and isotopes in a tabular form .
what is the difference between sodium ion and sodium atom ?
how to find valency of an element?
Calculate the energy associated with photon of light having wavelength 6000 Angstrom . [ h = 6.624 x 10-27 erg - sec ]
Please help and explain .
what were the drawbacks of thomson model of atom
If Z = 3, what would be the valency of the element? Also, name the element.
Calculate the number of molecules in 8g of Oxygen ?
Q. 1.22 g of a gas measured over water at 15°C and a pressure of 775 mm of mercury occupied 900 mL. Calculate the volume of dry gas at N.T.P. Vapour pressure of water at 15°C is 14 mm
1) 854.2 mL 2) 350.2 mL 3) 248.6 mL 4) 640.5 mL
find the valency of sulphur .[atomic no.=16
if K and L shells of an atom ar full,then what would be the total number of electrons in an atom???
what are canal rays ?
Q :If number of electrons in an atom is 8 and number of protons is also 8, then (i) what is the atomic number of the atom and (ii) what is the charge on the atom?
ANS:(i) The atomic number is equal to the number of protons. Therefore, the atomic number of the atom is 8.
(ii) Since the number of both electrons and protons is equal, therefore, the charge on the atom is 0.
My Q: Why is the charge on the atom 0????
5 examples of isotopes and 5 examples of isobars
What is the valency of copper?
EXPLAIN THE LAW OF CONSERVATION OF MASS WITH AN EXAMPLE ?
35.5 by mass. The mass of Y which combines with 2gram of X will be
(a) 7.1 gram (b) 3.55 gram (c) 35.5 gram (d) 71 gram
Compare the properties of electrons, protons and neutrons.
Why does Anode Rays depend on the nature of the gas present in the discharge tube ?
what are the application of isotopes
Differentiate between Isotopes and Isobars. How are they related to atomic mass ?
What are the drawbacks of Rutherfords atomic model?
difference between electrons protons and neutrons...also find the relation between the three
Q.1. How many molecules are present in
(a) 9 grams of water
(b) 17 grams of amonia
Q.2. Calculate the number of moles in 17 grams of H2O2
Q.3. Show that 12 grams of carbon-12 contains 6.023 x 1023 atoms of 12C
Q.4. What is the mass of one atom of hydrogen ?
Q.5. How many moles of Mg atoms are there in 100 grams of magnesium ?
Q.6. Neon gas consist of single atoms. What mass of neon contains 6.023 x 1023 atoms ?
An atom 'M' of an element reacts with oxygen to form M2O3. Calculate the valency of element 'M'.
Who discovered proton? Golstein or Rutherford?
Q1 Tabulate name of elements,their latin names and symbols.
what is electrovalency and covalency
explain the rutherford's gold foil experiment with the help of diagram?
(a) What are isobars? Give one example. (b) Write any two uses of isotopes
Write two differences between isobars and isotopes.
why is the valency of phosphorus 3 & 5 both ?
can someone give the answers plz...................
How to learn the 30 elements of modern periodic table Quickly?
given
radius of atom is 10-10 and radius of nucleus is 10-15
Write any 5 characteristics of Canal Rays ?
Calculate the no. of atoms of each element persent in 9.8 g of sulphuric acid, H2SO4. (H=1, S=32, O=16)
what r the rules of distribution of electrons in different shells of an atom.Pls give me all rules of higher classes also.
What is the valency of Aluminium whose atomic number is 13 ? Give reason.
what is the valency of gold, silver and lead and can you explai how we can find the valency of a compound like NH4, SO2, CO3 etc.
what are properties of anode rays x rays cathode rays and alpha particles
wht r d drawbacks of bohr's model of an atom??
What happens when an electron jumps from lower to higher energy levels?
Give 6 examples of isobars .........
Calculate number of neutrons present in 12 × 1025 atoms of oxygen (8O17). (Given NA = 6 × 1023 atoms)
(A) 1800 (B) 1600 (C) 1800 NA (D) 3200 NA
discovery of electrons
valency of carbon in CH4 , C2H6 , C2H4 , C2H2 ???
State any four general characteristics of isotopes.
Calculate the percentage of
[a] Water of crystallization in CuSO4.5H2O
[B] Potassium in K2CO3
[c] Oxygen in 22g of CO2
[D] Hydrogen in 36g of water
a) k2co3
b)hco3
and plz tell the method of this question for solving ......
reply fast urgent question....
State 3 characteristics of canal rays.
State two main postulates of Thomson model of an atom
applications and examples of isotopes an isobars ?
the description of atomic particles of two elements X and Y is given below:
X Y
protons 8 8
neutrons 8 9
electrons 8 8
i) what is the atomic number of Y?
ii) what is the mass number of X?
iii) what is the relation between X and Y?
iv) which element/elements do they represent?
v) write the electronic configuration of X.
vi) write the cation/anion formed by the element.
nucleus of an atom is heavy and positively charged? (give reasons)
what is difference between Isotopes, Isobars and Isotones
influenza and common cold spread faster and is difficult to control explain
give the atomic masses of important element for class 9
The nuclear radius is of the order of 10
-13 cm while atomic radius is of the order 10-8 cm. Assuming the nucleus and the atom to be spherical, what fraction of the atomic volume is occupied by the nucleus ?
How many electrons can fit into the sub-shell for which n = 3 and l = 1?
16options:
5
24
6
an element X forms an oxide with formula X2O3
rnstate the valency of X,write the formula of chloride of X and sulphate of X.
difference between isotope and isobars
The electronic configuration of potassium(K) is 2,8,8,1 instead of 2,8,9 thogh the M shell can accommodate up to 18 electrons. Explain
what are isobers, isotopes, isotones
who discovered the proton? E. goldstein or rutherford?
what is absolute mass and charge of an proton ,neutron and elrctron
write three significant features of Bohr's model of an atom.
how many molecules are present in
a) 9g of water
b) 17g of ammonium
Name three feature of rutherford's model
what are cathode rays and anode rays?
HOW CAN I CALCULATE VALENCY?