Question

........ 1/ Electronic configuration of
an element is 2,8,7. The atomic
number of this element is----and its
symbol is ---एक तत्व का इलेक्ट्रॉनिक
विन्यास 2,8,7 है। इस तत्व की परमाणु संख्या -
और इसका संकेत ----है।
O
10, Ne
O 7 , N
O 17, cI
O 11, Na​

Answer 1

Answer:

c)17,cl

Explanation:

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Answer 2

Answer:

The atomic number of this element is 17

The element is Chlorine

It's symbol is Cl

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