Kev tsim hluav taws xob
1. Cov xaim hluav taws xob muaj nyob ntawm cov txheej txheej hluav taws xob sib txawv uas nyob ze thiab deb ntawm lub nucleus thiab nws lub zog yog los ntawm qis mus rau qhov siab.
2. Qhov ntau ntawm cov hluav taws xob muaj nyob hauv txhua txheej yog 2n2 (n sawv cev tus naj npawb ntawm cov hluav taws xob txheej).
3. Tus naj npawb ntawm cov hluav taws xob sab nraud tsis tshaj 8 (thawj txheej tsis tshaj 2), txheej thib ob sab nraud tsis tshaj 18, thiab txheej txheej zaum kawg tsis tshaj 32.
4, cov hluav taws xob ib txwm nyob rau thawj qhov qis tshaj plaws hauv hluav taws xob txheej, yog li, thawj txheej yog thawj zaug, thaum thawj txheej puv, tom qab ntawv txheej thib ob, tom qab txheej thib ob puv lawm, thiab tom qab ntawv txheej thib peb.