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সংকেত

Md. Saifur Rahman

সংকেত (Formula)

হাইড্রোজেনের একটি অণুকে প্রকাশ করতে H₂ ব্যবহার করা হয়। যার অর্থ হলো একটি হাইড্রোজেনের অণুতে দুটি হাইড্রোজেনের পরমাণু (H) আছে।

আবার, পানির একটি অণুকে প্রকাশ করতে H₂O ব্যবহার করা হয়। এর অর্থ হচ্ছে পানির একটি অণুতে দুটি হাইড্রোজেন (H) এবং একটি অক্সিজেন পরমাণু (O) থাকে।

নিচে কয়েকটি অণুর সংকেত দেখানো হলোঃ

অণুর নাম	সংকেত
নাইট্রোজেন	N₂
অ্যামোনিয়া	NH₃
ক্লোরিন	Cl₂
সালফিউরিক এসিড	H₂SO₄
হাইড্রোক্লোরিক এসিড	HCl

এসএসসি || রসায়ন || SSC || Chemistry

অধ্যায় - ০১ : রসায়নের ধারণা

অধ্যায় - ০২ : পদার্থের অবস্থা
অধ্যায় - ০৩ : পদার্থের গঠন
অধ্যায় - ০৪ : পর্যায় সারণি
অধ্যায় - ০৫ : রসায়নিক বন্ধন
অধ্যায় - ০৬ : মোলের ধারণা ও রাসায়নিক গণনা
অধ্যায় - ০৭ : রাসায়নিক বিক্রিয়া
অধ্যায় - ০৮ : রসায়ন ও শক্তি
অধ্যায় - ০৯ : এসিড-ক্ষারক সমতা
অধ্যায় - ১০ : খনিজ সম্পদ ধাতু-অধাতু
অধ্যায় - ১১ : খনিজ সম্পদ- জীবাশ্ম
অধ্যায় - ১২ : আমাদের জীবনে রসায়ন

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