ਇੱਕ ਪ੍ਰਮਾਣੂ ਦੀ ਇਲੈਕਟ੍ਰਾਨੀ 2,8,7 ਤਰਤੀਬ ਹੈ ਇਸ ਤੱਤ ਦਾ ਪ੍ਰਮਾਣੂ ਅੰਕ ....... ਅਤੇ ਸੰਕੇਤ ........ ਹੈ l/ 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। *
10 , Ne
7 , N
17 , Cl
11 , Na
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If electric configuration of an element is 2,8,7. Then the atomic number of this element will be 17 and it's symbol will be Cl.
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Answer:
17 , Cl
Explanation:
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