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write 5-6 differences between isobars and isotopes in a tabular form .
how to find valency of an element?
what were the drawbacks of thomson model of atom
which has highest e/m ratio
a) he 2+
b)h
C)H+
d) he+
Calculate the number of molecules in 8g of Oxygen ?
find the valency of sulphur .[atomic no.=16
what are canal rays ?
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.
force on electron F=eE what e and E stands for.
what are the application of isotopes
What are the drawbacks of Rutherfords atomic model?
explain the rutherford's gold foil experiment with the help of diagram?
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 ?
Calculate the no. of atoms of each element persent in 9.8 g of sulphuric acid, H2SO4. (H=1, S=32, O=16)
difference between electrons protons and neutrons...also find the relation between the three
Who discovered proton? Golstein or Rutherford?
what are sub shells ?? Who discovered them and how ??? the discoverer of sub shells disproved which scientist
Q1 Tabulate name of elements,their latin names and symbols.
an ion M3+ contains 10 electrons and 14 neutrons.What are the atomic mass and mass number of the element M ? name the element
what is the difference between sodium ion and sodium atom ?
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 is electrovalency and covalency
(a) What are isobars? Give one example. (b) Write any two uses of isotopes
Write two differences between isobars and isotopes.
How many atoms are present in SO4 raised to 2- ion and NH4+ ion???
why is the valency of phosphorus 3 & 5 both ?
How to learn the 30 elements of modern periodic table Quickly?
discrete orbits are also known as_____
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 does indivisible mean in terms of chemistry?
what are properties of anode rays x rays cathode rays and alpha particles
The charge/mass ratio of electron
a) depends upon nature of gas
b) depends upon nature of electrodes
c) remains constant
d) depends upon both nature of gas and nature of electrodes
wht r d drawbacks of bohr's model of an atom??
Give 6 examples of isobars .........
valency of carbon in CH4 , C2H6 , C2H4 , C2H2 ???
discovery of electrons
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.
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
State two main postulates of Thomson model of an atom
applications and examples of isotopes an isobars ?
For the symbol H, D and T tabulate three sub-atomic particles found in each of them.
plz explain me this question and tell the answer also
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.
The number of electrons that can be accommodated in the m,n orbit is eight....but why as m can hold 16 and n 32....
what is difference between Isotopes, Isobars and Isotones
give the atomic masses of important element for class 9
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.
In potassium and calcium,the fillings of electrons in N-shell starts after M-shell has acquired 8 electrons although M-shell can accomodate upto18 electrons.why?
difference between isotope and isobars
Define valency by taking example of silicon and oxygen.{atomic number of silicon=14 and atomic number of oxygen=8}
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
While revolving in discrete orbits, the electrons do not radiate energy. Could it be explained with proper reason with the help of video?
who discovered the proton? E. goldstein or rutherford?
calculate the formula mass of CUSO4.5H2O
(atomic mass of CU = 63.5u,S=32u,O=16u,H=1u)
If Z = 3, what would be the valency of the element? Also, name the element.
write three significant features of Bohr's model of an atom.
difference between protons and anode rays
and electrons and cathode rays
Name three feature of rutherford's model
How is an element represented with its symbol and atomic number?
what are cathode rays and anode rays?
calculate -
a)no. of grams-atoms of oxygen ?
b)the no. of atoms of oxygen
c)the no. of molecules of ozone in 32g of ozone (O3)
E.g: 9876543210, 01112345678
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Syllabus
write 5-6 differences between isobars and isotopes in a tabular form .
how to find valency of an element?
what were the drawbacks of thomson model of atom
which has highest e/m ratio
a) he 2+
b)h
C)H+
d) he+
Calculate the number of molecules in 8g of Oxygen ?
find the valency of sulphur .[atomic no.=16
BALANCE THIS EQUATION
what are canal rays ?
HCl,
H2,
H2O,
NH3,
CH3OH,
PCl5
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.
force on electron F=eE what e and E stands for.
what are the application of isotopes
What are the drawbacks of Rutherfords atomic model?
explain the rutherford's gold foil experiment with the help of diagram?
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 ?
Calculate the no. of atoms of each element persent in 9.8 g of sulphuric acid, H2SO4. (H=1, S=32, O=16)
difference between electrons protons and neutrons...also find the relation between the three
Who discovered proton? Golstein or Rutherford?
which of the following liquids?
(1) 0.5% salt solution (2) 0.9% salt solution
(3) 1.2% salt solution (4) distilled (pure) water
what are sub shells ?? Who discovered them and how ??? the discoverer of sub shells disproved which scientist
Q1 Tabulate name of elements,their latin names and symbols.
an ion M3+ contains 10 electrons and 14 neutrons.What are the atomic mass and mass number of the element M ? name the element
what is the difference between sodium ion and sodium atom ?
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 is electrovalency and covalency
(a) What are isobars? Give one example. (b) Write any two uses of isotopes
Write two differences between isobars and isotopes.
How many atoms are present in SO4 raised to 2- ion and NH4+ ion???
why is the valency of phosphorus 3 & 5 both ?
How to learn the 30 elements of modern periodic table Quickly?
discrete orbits are also known as_____
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 does indivisible mean in terms of chemistry?
what are properties of anode rays x rays cathode rays and alpha particles
The charge/mass ratio of electron
a) depends upon nature of gas
b) depends upon nature of electrodes
c) remains constant
d) depends upon both nature of gas and nature of electrodes
wht r d drawbacks of bohr's model of an atom??
1) write the electronic configuration of element X
2)write the electronic configuration of anion of element Y
3) write the formula of the compound formed by the combination of X and Y.
Give 6 examples of isobars .........
a) What is its atomic no.?
b) State its valency
c) Identify the element.
valency of carbon in CH4 , C2H6 , C2H4 , C2H2 ???
discovery of electrons
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.
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
State two main postulates of Thomson model of an atom
applications and examples of isotopes an isobars ?
For the symbol H, D and T tabulate three sub-atomic particles found in each of them.
plz explain me this question and tell the answer also
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.
The number of electrons that can be accommodated in the m,n orbit is eight....but why as m can hold 16 and n 32....
what is difference between Isotopes, Isobars and Isotones
Ans-The evidence for the existence of nucleus in an atom is given by E.Rutherford.He explained this by the alpha-particle scattering experiment .In that some alpha particles were passed through the gold foil.Some alpha particles(Helium 2 positive ions) we're deflected back.From this experiment he concluded that almost all the Mass of an atom is concentrated in it's nucleus.
Protons+Neutrons=Nucleus of an atom.
Please check my answer to this question.
No links plz.
give the atomic masses of important element for class 9
Chapter: structure of the atom
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.
In potassium and calcium,the fillings of electrons in N-shell starts after M-shell has acquired 8 electrons although M-shell can accomodate upto18 electrons.why?
difference between isotope and isobars
Define valency by taking example of silicon and oxygen.{atomic number of silicon=14 and atomic number of oxygen=8}
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
While revolving in discrete orbits, the electrons do not radiate energy. Could it be explained with proper reason with the help of video?
who discovered the proton? E. goldstein or rutherford?
calculate the formula mass of CUSO4.5H2O
rn(atomic mass of CU = 63.5u,S=32u,O=16u,H=1u)
If Z = 3, what would be the valency of the element? Also, name the element.
write three significant features of Bohr's model of an atom.
difference between protons and anode rays
and electrons and cathode rays
Name three feature of rutherford's model
How is an element represented with its symbol and atomic number?
what are cathode rays and anode rays?
calculate -
a)no. of grams-atoms of oxygen ?
b)the no. of atoms of oxygen
c)the no. of molecules of ozone in 32g of ozone (O3)