Science, asked by sumaskobalkar86, 1 day ago

please friends help me for the question in image​

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Answered by atulkmar258
1

it is above elements name ,atomic no, electronic configuration,valency, electrone

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Answered by rohitavara2017
0

ELEMENTS NAME ARE

=Boron(B),Carbon(C), Calcium(Ca)

ITS ATOMIC NUMBERS WHICH ARE GIVEN IN THE ABOVE

=5,6 and 20

ELECTRONIC CONFIGURATIONS ARE IN KLMN SHELLS

=2,3

=2,4

=2,8,8,2

VALENCEIS ARE

3 4 2

ELECTRONS ARE

number of electrons=number of atomic number

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