How many electrons does a neurtral fluorine atom contain?

How many electrons does a neurtral fluorine atom contain? How many electrons does ground-state Kr have with both n = 3 and l = How many valence(outer shell)electrons are present in the atoms of the element with atomic number51(about Chemistry) 关于配位体化合物的问题How many unpaired electrons are there in the hexabromomanganate(III) anion?在[Br6Mn]-3里有多少个未成对电子?a.1b.3c.5d.2e.4Mn失去的3个电子是和Br形成配位键了么？ 问一道AP化学题The differentiating electrons for transition elements are A.d electrons B.s electrons C.p electrons D.f electrons E.valence electronsdifferentiating electrons是什么东西?随便拿个元素给我举个例子解释一下, 1.How many electrons have removed from a positively charged pith-ball electroscope if it has a charge of 7.5×10^-11C?2.What is the charge in coulombs on an object that has(1)An excess of 6.25×10^19 electrons?（2）An deficiency of 1.0×10^8 electr 英语懂的 来拿分 11.How many neutrons and pro tons are in an atom of phosphorus11.How many neutrons and pro tons are in an atom of phosphorus-31,atomic number 15,and determine how many electrons should be in the first,second,third,and fourth en ______times do you A how often B how many C how much D how long ( )milk do you want?A.How old B.How many C.How much D.How ------is this big A; how much B;how many C;how far D; how tall ( )___beef would you like?A.how many B.how much C.how big D.how long ()do you go shopping?a:how many .b:how much .c:how long d:how ofter how many how many, how many how How ___grams of flour will you buy? A How much B How many C How heavy D How big _____do you weigh now?( )A.how many B.how much C.how heavy D.what weight ___is the temperature today?A.What B.How C.How many D.How much