Is it possible for the atom of an element to have one electron, one proton and no neutron. If so, name the element.
Q.1. Is it possible for the atom of an element to have one electron, one proton and no neutron. If so, name the element.
Ans. Yes, it is true for hydrogen atom which is represented as H.
Q.2. Write any two observations which support the fact that atoms are divisible.
Ans. Discovery of electrons and protons.
Q.3. Will 35 Cl and 37℃l have different valencies ? Justify your answer.
Ans. No,35Cl and ³7℃l are isotopes of an element.
Q.4. Why did Rutherford select a gold foil in his a-ray scattering experiment?
Ans. Gold has high malleability.
Q.5. One electron is present in the outermost shell of the atom of an element X. What would be the nature and value of charge on the ion formed if this electron is removed from the outermost shell ?
Ans. +1
Q.6. Write down the electron distribution of chlorine atom. How many electrons are there in the L-shell? (Atomic number of chlorine is 17).
Ans. 2, 8, 7. The L-shell has eight electron
Q.7. In the atom of an element X, 6 electrons are present in the outermost shell. If it acquires noble gas configuration by accepting requisite number of electrons, then what would be the charge on the ion so formed ?
Ans. – 2
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