What is the electronic configuration of an element represented as 19₉X?

1s ²2s² 2p ⁵

1s²2s²3s²3p³

1s² 2s² 2p ³3s²

1s ²2s²2p ⁶3s²3p₆4s ₁

Correct Option

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3 years ago

It's A because electronic configuration deals with mass number not atomic number

1 year ago

Option A is correct. The element is Fluorine
And its atomic number is 9
hence electronic configuration is 1s²,2s², 2p⁵

5 years ago

Don't understand

2 months ago

The answer is option a

ceoofwahala

20th June, 2026

Chemistry

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ASSAAS

20th June, 2026

English Language

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infinitehoaxx

21st May, 2026

Computer

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What is the electronic configuration of an element represented as 199X?