Which elements have 5 rings of electrons? The atomic numbers and symbols are in the parentheses ( ). * : tellurium (52-Te), tin (50-Sn), xenon (54-Xe)
: lithium (3-Li), boron (5-B), oxygen (8-O)
: sodium (11-Na), chlorine (17-Cl), argon (18-Ar)

distance, luminosity, brightness, radius, chemical composition, and temperature

atomic mass = 39

number of neutrons = 20

number of protons= 19

electronic configuration = 1s2 2s2 2p6 3s2 3p6 4s1

the number of electron in first shell = 2

number of electrons in n=3 shell = 8

i think its 100

i hope this !

rosa was looking for patterns to predict the products of chemical reactions. she recorded three similar decomposition reactions in the table.she should record 2licl + 3o2.

in the last row of the table. it is the thermal decomposition of chlorate lithium, hence, she should record these products as: lithium chloride ( 2licl ) and oxygen ( 3o2 )   2 > 2 licl + 3o2.