In response to a question, a student stated that in an atom, the number of
protons is greater than the number of neutrons, which in turn is greater
than the number of electrons. Do you agree with the statement? Justify
your answer.
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?
Write down the electron distribution of chlorine atom. How many electrons
are there in the L shell? (Atomic number of chlorine is 17).
One electron is present in the outer most 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 outer most shell?
Is it possible for the atom of an element to have one electron, one proton
and no neutron. If so, name the element.
Atomic models have been improved over the years. Arrange the following
atomic models in the order of their chronological order
(i) Rutherford’s atomic model
(ii) Thomson’s atomic model
(iii) Bohr’s atomic model
(a) (i), (ii) and (iii)
(b) (ii), (iii) and (i)
(c) (ii), (i) and (iii)
(d) (iii), (ii) and (i)
Which of the following statement is always correct?
(a) An atom has equal number of electrons and protons.
(b) An atom has equal number of electrons and neutrons.
(c) An atom has equal number of protons and neutrons.
(d) An atom has equal number of electrons, protons and neutrons.
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