write 5-6 differences between isobars and isotopes in a tabular form .
how to find valency of an element?
what is the difference between sodium ion and sodium atom ?
what were the drawbacks of thomson model of atom
Calculate the number of molecules in 8g of Oxygen ?
find the valency of sulphur .[atomic no.=16
Calculate the no. of atoms of each element persent in 9.8 g of sulphuric acid, H2SO4. (H=1, S=32, O=16)
what are canal rays ?
An element X contains 6 electrons in M shells as valence electrons. What is the atomic number of X and also identify wheather X is metal or non metal?
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 ?
explain the rutherford's gold foil experiment with the help of diagram?
the properties of electrons, protons and neutrons.
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
what are the application of isotopes
What are the drawbacks of Rutherfords atomic model?
which has highest e/m ratio
a) he 2+
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 ?
difference between electrons protons and neutrons...also find the relation between the three
Who discovered proton? Golstein or Rutherford?
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