Chemistry, asked by priyalovebrd, 4 days ago

ভাৱসংখ্যাসহ এমন একটি মৌলেৱ চিহ্ন লেখো যাৱ কেন্দ্রে দুটি নিউট্ৰন আছে।

Answers

Answered by aribatabassum06

0

Answer:

হিলিয়াম , এর ভর সংখ্যা হলো -- 4

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