An element has electronic configuration $(2, 8, 8, 1)$ , then the element will be:

non-metal

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metal

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noble gas

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none of these

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Solution

The correct option is D metal
Potassium with the atomic number $19$ has the electronic configuration $(2,8,8,1)$. So, it can lose one extra electron and can become a positive ion. So, it is a metal.
Option B is correct.

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Similar questions

The valency of the element having electronic configuration 2,8,8,1 is –

An element A has the electronic configuration 2, 8, 18, 8, 1. The sign on the simple ion of element A will be negative.

11

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.

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