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World Hypertension day is observed every year on May 17th.
Iodine atomic structure.Consists of 53 protons and 53 electrons and 74 neutrons. Information for learning chemistry
每年 5 月 17 日是世界高血壓日
Santa's gift in the snow. Various gifts such as teddy bears, gift boxes and candies.
特寫鏡頭：一位護士在他的辦公室里，穿著實驗室大褂，手里拿著一個寫字板。
Nihonium atomic structure.Consists of 113 protons and 113 electrons and 173 neutrons. Information for learning chemistry
Thallium atomic structure.Consists of 81 protons and 81 electrons and 123 neutrons. Information for learning chemistry
Indium atomic structure.Consists of 49 protons and 49 electrons and 66 neutrons. Information for learning chemistry
Gallium atomic structure.Consists of 31 protons and 31 electrons and 39 neutrons. Information for learning chemistry
鋁的原子結構。由 13 個質子、13 個電子和 14 個中子組成。化學學習資料；
Boron atomic structure.Consists of 5 protons and 5 electrons and 6 neutrons. Information for learning chemistry
Halogens elements on the periodic table. Information for learning chemistry
砹的原子結構。由 85 個質子、85 個電子和 125 個中子組成。化學學習資料；
Chlorine atomic structure.Consists of 17 protons and 17 electrons and 18 neutrons. Information for learning chemistry
Fluorine atomic structure.Consists of 9 protons and 9 electrons and 10 neutrons. Information for learning chemistry
chalcogens elements on the periodic table. Information for learning chemistry
Polonium atomic structure.Consists of 84 protons and 84 electrons and 84 neutrons. Information for learning chemistry
硒的原子結構。由 34 個質子、34 個電子和 34 個中子組成。化學學習資料；
Tellurium atomic structure.Consists of 52 protons and 52 electrons and 52 neutrons. Information for learning chemistry
Sulfur atomic structure.Consists of 16 protons and 16 electrons and 16 neutrons. Information for learning chemistry
Alkaline earth metal elements on the periodic table. Information for learning chemistry
Oxygen atomic structure.Consists of 8 protons and 8 electrons and 8 neutrons. Information for learning chemistry
Radium atomic structure.Consists of 88 protons and 88 electrons and 88 neutrons. Information for learning chemistry
Barium atomic structure.Consists of 56 protons and 56 electrons and 56 neutrons. Information for learning chemistry
Calcium atomic structure.Consists of 20 protons and 20 electrons and 20 neutrons. Information for learning chemistry
Alkali metal elements on the periodic table. Information for learning chemistry
Magnesium atomic structure.Consists of 12 protons and 12 electrons and 12 neutrons. Information for learning chemistry
Beryllium atomic structure.Consists of 4 protons and 4 electrons and 4 neutrons. Information for learning chemistry
Francium atomic structure.Consists of 87 protons and 87 electrons and 87 neutrons.
Cesium atomic structure.Consists of 55 protons and 55 electrons and 55 neutrons.
Rubidium atomic structure.Consists of 37 protons and 37 electrons and 37 neutrons.
Potassium atomic structure.Consists of 19 protons and 19 electrons and 19 neutrons.
Sodium atomic structure.Consists of 11 protons and 11 electrons and 11 neutrons.
Lithium atomic structure.Consists of 3 protons and 3 electrons and 3 neutrons.
氫的氘同位素。由1個質子、1個電子和1個中子組成
The protium isotope of hydrogen.Consists of 1 proton and 1 electron.
Triel element on the periodic table. Information for learning chemistry
The tritium isotope of hydrogen.Consists of 1 proton and 1 electron and 2 neutrons.
氫有三種同位素，包括氕、氘、氚
溴原子結構。由 35 個質子、35 個電子和 45 個中子組成。化學學習資料；
Strontium atomic structure.Consists of 38 protons and 38 electrons and 38 neutrons. Information for learning chemistry
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