Question

4. Write down the electronic
configuration of the
following
elements from the given atomic
numbers Answer the following
question with explanation.
a. Li, Si, He, „Na, P Which of these
elements belong to be period 3?
c. „N, C, ,0. B. ,,A1
Which is
the
most
electronegative element
element among
these?​

Answer 1

Explanation:

Li - 1s2 2s1

Si - 1S2 2S2 2P6 3S2 3P2

He -1s2

Na -1S2 2S2 2P6 3S1

P - 1S2 2S2 2P6 3S2 3P3

Na,p, Si belongs to Period 3

Oxygen is the most electronegative element

Answer 2

Answer:

He elements belong to be period 3

Ca belonging to second group

C most electronegative element

Be most electropositive element

Si largest atoms

Explanation:

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