ৰসায়ন বিজ্ঞান হিলিয়াম

=== FRONT MATTER FIELDS === title: হিলিয়াম বিজ্ঞান description: হিলিয়াম হৈছে একটা রসায়নীয় তত্ত্ব যাৰ চিহ্ন He আৰু অণুসংখ্যা 2। ই এটা বেৰোলো, বোলোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনোনো