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Byju's Answer
Standard XII
Physics
Huygens' Principle
An atom has e...
Question
An atom has electronic configuration
2
,
8
,
7
.
a) What is the atomic number of this element?
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Solution
Atomic number of the element having electronic configuration
2
,
8
,
7
=
2
+
8
+
7
=
17
.
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