M1 Strontium, atomic number 38, is an element from
the fifth period of the periodic table. It is a member
of Group 2. Copy and complete the following:
An atom of strontium therefore has:
electrons
number of electrons ?
shells of electrons?
electrons in outer shell?
Answers
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Explanation:
Electronic configuration of Strontium is 2.8.18.8.2
No. of electrons is 38
Shells of electrons is 5
Electrons in outer shell is 2
For a atom of an element not for an ion,
No. of Electrons = Atomic No.
Shell of electrons for an element= Period no.
No. of electrons in outer shell for s- block elements= Group no.
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