Which one of the following configurations represents metallic character?

2, 8, 2

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2, 8, 4

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2, 8, 7

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2, 8, 8

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Solution

The correct option is A 2, 8, 2
2, 8, 4=14 is Metalloid group
2, 8, 7=17 is Halogen group
2, 8, 8=18 is Noble gas group
2, 8, 2=12 is alkaline earth metals
So 2, 8, 2 represents metallic character.

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Similar questions

X, Y, Z

J

X = 2, 8, 4

Y = 2, 8, 8

Z = 2, 8, 8, 1

J = 2, 8, 8, 7

^{'} X^{'}

^{'} Y^{'}

2, 8, 5

2, 8, 6

An element A atomic number 7 mass number 14

B electronic configuration 2, 8, 8

C electrons 13, neutrons 14

D Protons 18 neutrons 22

E electronic configuration 2, 8, 8, 1

State (i) valency of each element (ii) which one is a metal (iii) which is a non-metal (iv) which is an inert gas.

2, 8, 8, 2

Solve:

\frac{8 \times [(4 + 2)^{2} + (4 - 2)^{2}]}{(4)^{2} + (2)^{2}}

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