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납은탄소그룹에속해있는화학적원소입니다 . 납의기호는  Pb 이고원자번호는  82 입니다 . 이것의원래색깔은금속성의회색입니다 . 납은부드럽고 , 펴늘일수있는금속입니다 . 하지만또한납은대단히독성이강한금속입니다 . 납은지구의지각에서찾아볼수있습니다 . 납은지구의지각에서찾기가쉽습니다 , 따라서납은쌉니다 .
 * 납은무엇인가요 ? **


 * 이것은어디에쓰이나요 ? **

납은순수한금속으로쓰여질수있습니다 . <span style="color: black; font-family: '바탕','serif';">납은다른금속들과섞일수도있고 <span style="color: black; font-family: 'Arial','sans-serif';">, <span style="color: black; font-family: '바탕','serif';">또화학적으로합성될수있습니다 <span style="color: black; font-family: 'Arial','sans-serif';">.

<span style="color: black; font-family: '바탕','serif';">납은싸기때문에 <span style="color: black; font-family: 'Arial','sans-serif';">, <span style="color: black; font-family: '바탕','serif';">페인트 <span style="color: black; font-family: 'Arial','sans-serif';">, <span style="color: black; font-family: '바탕','serif';">세라믹 <span style="color: black; font-family: 'Arial','sans-serif';">, <span style="color: black; font-family: '바탕','serif';">파이프 <span style="color: black; font-family: 'Arial','sans-serif';">, <span style="color: black; font-family: '바탕','serif';">땜납 <span style="color: black; font-family: 'Arial','sans-serif';">, <span style="color: black; font-family: '바탕','serif';">가솔린 <span style="color: black; font-family: 'Arial','sans-serif';">, <span style="color: black; font-family: '바탕','serif';">배터리 <span style="color: black; font-family: 'Arial','sans-serif';">, <span style="color: black; font-family: '바탕','serif';">화장품등에대단히많이쓰입니다 <span style="color: black; font-family: 'Arial','sans-serif';">.


 * 납의장점이뭔가요 <span style="color: black; font-family: 'Arial','sans-serif';">? **

납은사람들을방사성물질에서부터보호해줍니다 <span style="color: black; font-family: 'Arial','sans-serif';">. 납은아주 <span style="color: black; font-family: '바탕','serif';">약한 전기전도의원소입니다 <span style="color: black; font-family: 'Arial','sans-serif';">. 그러한까닭으로배터리에쓰입니다 <span style="color: black; font-family: 'Arial','sans-serif';">. 또하나의장점은 <span style="color: black; font-family: 'Arial','sans-serif';">, 납은부식을막아줍니다 <span style="color: black; font-family: 'Arial','sans-serif';">.

납이유독성물질인것에관하여 <span style="color: black; font-family: 'Arial','sans-serif';">, 땅의오염이라는결과를만들어냅니다 <span style="color: black; font-family: 'Arial','sans-serif';">. 또하나의중요한결과는물의공급입니다 <span style="color: black; font-family: 'Arial','sans-serif';">. 납은물을오염시킵니다 <span style="color: black; font-family: 'Arial','sans-serif';">. 그리하여 <span style="color: black; font-family: 'Arial','sans-serif';">, 납은사람의건강에해를끼치는동시에 <span style="color: black; font-family: 'Arial','sans-serif';">, 환경도오염시킵니다 <span style="color: black; font-family: 'Arial','sans-serif';">.
 * <span style="color: black; font-family: '바탕','serif';">납의단점은무엇인가요 <span style="color: black; font-family: 'Arial','sans-serif';">? **

<span style="color: black; font-family: '바탕','serif';">납에대한나의의견은 <span style="color: black; font-family: 'Arial','sans-serif';">, <span style="color: black; font-family: '바탕','serif';">우리는납을조심하게써야합니다 <span style="color: black; font-family: 'Arial','sans-serif';">. <span style="color: black; font-family: '바탕','serif';">이것을말한이유는만약우리가납을부주의하게쓰면땅과물이오염될수도있습니다 <span style="color: black; font-family: 'Arial','sans-serif';">. <span style="color: black; font-family: '바탕','serif';">더나쁜상황은 <span style="color: black; font-family: 'Arial','sans-serif';">, <span style="color: black; font-family: '바탕','serif';">우리가다량의납으로뭔가를생산할경우 <span style="color: black; font-family: 'Arial','sans-serif';">, <span style="color: black; font-family: '바탕','serif';">만약우리가그생산물을쓴다면 <span style="color: black; font-family: 'Arial','sans-serif';">, <span style="color: black; font-family: '바탕','serif';">우리의몸은건강하지못합니다 <span style="color: black; font-family: 'Arial','sans-serif';">. <span style="color: black; font-family: '바탕','serif';">그러나 <span style="color: black; font-family: 'Arial','sans-serif';">, <span style="color: black; font-family: '바탕','serif';">납에도장점이있다는걸우리는잊어서는안됩니다 <span style="color: black; font-family: 'Arial','sans-serif';">. <span style="color: black; font-family: '바탕','serif';">우리가이것을올바르게쓴다면 <span style="color: black; font-family: 'Arial','sans-serif';">, <span style="color: black; font-family: '바탕','serif';">우리는납을통해이익을얻을수있습니다 <span style="color: black; font-family: 'Arial','sans-serif';">.
 * <span style="color: black; font-family: '바탕','serif';">납에대한나의의견은뭔가요 <span style="color: black; font-family: 'Arial','sans-serif';">? **