Taw qhia ntawm alkali hlau
Alkali hlau xa mus rau 6 yam khoom hlau hauv Pawg IA ntawm cov lus qhia qee lub sijhawm tsuas yog hydrogen (H), uas yog lithium (Li), sodium (Na), potassium (K), rubidium (Rb), cesium (Cs), thiab francium ( Fr).
Raws li IUPAC cov kev cai, alkali hlau yog rau Pawg IA cov ntsiab lus hauv cov rooj zaum hauv ib ntu. Alkali hlau txhua tus muaj cov khoom siv hluav taws xob sab nraud uas yog los ntawm s txoj hauv kev, yog li pab pawg no yog thaj chaw ntawm thaj chaw s ntawm lub rooj ib ntu. Cov cuab yeej tshuaj lom neeg ntawm alkali hlau qhia qhov pom tseeb heev tus yam ntxwv ntawm tus cwj pwm, uas yog qhov piv txwv zoo tshaj plaws ntawm ntu ntawm ntu. Txawm hais tias hydrogen (H) belongs rau Pawg IA, nws cov khoom siv tshuaj lom neeg muaj qhov sib txawv ntawm cov hlau alkali, yog li nws tsis suav hais tias yog hlau alkali.