What is the mass mumber of an element?ps:Please answered in

lanzi09222022-10-04 11:39:543条回答

What is the mass mumber of an element?ps:Please answered in English
I want the define of "mass mumber of an element"

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guangdechenl 共回答了19个问题 | 采纳率89.5%
the mass number of an element is used in chemistry, it ls the sum of the number of neutron and proton of an element
1年前
大众宝来 共回答了613个问题 | 采纳率
Also consult your chemistry books?
1年前
lj19851003 共回答了1个问题 | 采纳率
O H N Cl C P S
K Ca Na Mg Al Zn Fe Cu Hg Ag Mn Ba
1年前

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如果按照下列数字继续的话,320将出现在哪一行?在那一行的什么位置?
答案写成“行,位置”的形式
答案很简单啊,第25行从左往右数第20个.
第n行第一个数是1+(1+(n-1))*(n-1)/2
n=25时,就是第25行第一个数是301,因为第n行有n个数,所以这一行有25个数,包含320,那320就是这一行的第20个数.
请问Mumber和Number的区别?都是什么意思?
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+复数名词.你可以通过记住一些简单的例句,来掌握.例如:A number of students love their teachers.
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A
因为图形的样子很像阿拉伯数字十二.希望我能帮助你解疑释惑.