Question

ਇਸ ਤੱਤ ਦਾ ਪ੍ਰਮਾਣੂ ਅੰਕ ....... ਅਤੇ ਸੰਕੇਤ ........ ਹੈ l/ Electronic configuration of an element is 2,8,1. The atomic number of this element is----and its symbol is​

Answer 1

Answer:

can't understand ur writing .......

Answer 2

Answer:

$\sin( \tan(xyy551 \sqrt[ \sqrt[ \sqrt[ \sqrt{ \sqrt{?} } ]{?} ]{?} ]{?} ) )$