2007-01-21 04:48:42 · 7 answers · asked by treesap7h 2 in Science & Mathematics ➔ Chemistry
The size of atom along the period decreases. With an exception that noble gases atoms are larger than any other element's atom size.
I hope this helps!!
2007-01-21 05:00:50 · answer #1 · answered by smart-crazy 4 · 1⤊ 0⤋
Elements within a period all have the same number of energy levels, but as you move across the period you have greater numbers of protons and electrons.The force of attraction, because of greater numbers of protons and electrons,causes the electrons to be pulled in closer to the nucleus, thus making the size of the atom smaller as you move from left to right across a period.
2007-01-21 06:46:18 · answer #2 · answered by Mrs. F 2 · 0⤊ 0⤋
Well THE atomic mass of the elemant gradually gets greater but the size of the atomic radius shrinks and becomes smaller.
2007-01-21 04:58:11 · answer #3 · answered by bob m 2 · 0⤊ 0⤋
the atomic number indicates the number of protons and electrons. As more matter is added, the amu and size increases.
2007-01-21 04:57:20 · answer #4 · answered by zlisa98 3 · 0⤊ 0⤋
Atom grows.
2007-01-21 04:54:38 · answer #5 · answered by Anonymous · 0⤊ 1⤋
Within a period it gets smaller...Greater attraction between protons and electrons
Within a group it gets larger...more energy shells
2007-01-21 04:57:38 · answer #6 · answered by The Cheminator 5 · 0⤊ 0⤋
cut back interior classes = boost of helpful nuclear can charge, boost interior communities = increasing style of electrons, greater orbitals, much less administration of the outer shells via the nucleus. yup yup wiki explains it suitable. :)
2016-12-14 08:30:23 · answer #7 · answered by ? 4 · 0⤊ 0⤋