Elements A,B,C,D have atomic numbers 11,20,28 36 respectively1) write down electronic configuration.2) write which group, period or block it belongs to.
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element A=sodium.
electronic configuration:-1S2 2S2 2P6 3S1
group=1A
period=3
block=s block
element b=calcium
electronic configuration:- 1S2 2S2 2P6 3S2 3P6 4S2
group=2A
PERIOD=4
BLOCK= S- BLOCK
ELEMENT C= NICKEL
ELECTRONIC CONFIGURATION=1S2 2S2 2P6 3S2 3P6 3D8 4S2
GROUP=10
PERIOD=4
BLOCK=D
ELEMENT D=KRYPTON
ELECTRONIC CONFIGURATION=1S2 2S2 2P6 3S2 3P6 3D10 4S2 4P5
GROUP=17
PERIOD=4
BLOCK=P.
electronic configuration:-1S2 2S2 2P6 3S1
group=1A
period=3
block=s block
element b=calcium
electronic configuration:- 1S2 2S2 2P6 3S2 3P6 4S2
group=2A
PERIOD=4
BLOCK= S- BLOCK
ELEMENT C= NICKEL
ELECTRONIC CONFIGURATION=1S2 2S2 2P6 3S2 3P6 3D8 4S2
GROUP=10
PERIOD=4
BLOCK=D
ELEMENT D=KRYPTON
ELECTRONIC CONFIGURATION=1S2 2S2 2P6 3S2 3P6 3D10 4S2 4P5
GROUP=17
PERIOD=4
BLOCK=P.
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