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CBSE Class 9 Answered

1] the atom of an electron has 2 electrons in the M-shell. what is its atomic number? name the element. 2] calculate the number of particles in 0.1 mole of carbon atoms 3] state the law of constant proportions. explain with an example 4] raunak took 5 moles of carbon in a container and krish also took 5 moles of sodium atoms in another container of same weight [ atomic mass of Na = 23u, C = 12u]. whose container has more number of atoms.
Asked by leean | 13 Mar, 2015, 06:19: PM
answered-by-expert Expert Answer

Please ask only 1 question at a time.

Atomic Number = 12

Name = Magnesium (Mg)

 


Answered by | 13 Mar, 2015, 06:32: PM

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