1. Indicate whether each of the following
statements is true or false. If false, correct the
statement.
(a) Effective nuclear charge stays about the same
when one goes down a group.
(b) Group 17 elements have seven electrons in
their outer level.
(c) Energy is given off when an electron is
removed from an atom.
(d) An electron transition from n = 3 to n = 1
gives off energy.
(e) Light emitted by an n = 4 to n = 2 transition
will have a longer wavelength than that from an
n = 5 to n = 2 transition.
(f) A sublevel of = 3 has a capacity of ten
electrons.
Solution
(a) true
(b) true
(c) False.
Energy is required to an electron from an atom.
(d) true.
(e) true
(f) false
A sublevel of l =3 has capacity of 14 electrons