Observe the figure and answer the following questions.
a) Identify the block
shown by box A and
write an electronic
configuration of any one
element of this block.
b) Identify the block of
element denoted by
letter B and write its
period number.
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Answer:
a)s block
ex:-carbon – 1s² 2s² 2p²
b)iron(ferrium)–4th period
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