作业帮英语翻译Each horizontal row of elements constitutes a period.It should be noted that the lengths of the periods vary.There is a very short period containing only 2 elements,followed by two short periods of 8 elements each,and then two long period
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英语翻译Each horizontal row of elements constitutes a period.It should be noted that the lengths of the periods vary.There is a very short period containing only 2 elements,followed by two short periods of 8 elements each,and then two long period
英语翻译
Each horizontal row of elements constitutes a period.It should be noted that the lengths of the periods vary.There is a very short period containing only 2 elements,followed by two short periods of 8 elements each,and then two long periods of 18 elements each.The next period includes 32 elements,and the last period is apparently incomplete.With this arrangement,elements in the same vertical column have similar characteristics.These columns constitute the chemical families or groups.The groups headed by the members of the two 8-element periods are designated as main group elements,and the members of the other groups are called transition or inner transition elements.
In the periodic table,a heavy stepped line divides the elements into metals and nonmetals.Elements to the left of this line (with the exception of hydrogen) are metals,while those to the right are nonmetals.This division is for convenience only; elements bordering the line—the metalloids-have properties characteristic of - both metals and nonmetals.It may be seen that most of the elements,including all the transition and inner transition elements,are metals.
Except for hydrogen,a gas,the elements of group IA make up the alkali metal family.They are very reactive metals,and they are never found in the elemental state in nature.However,their compounds are widespread.All the members of the alkali metal family,form ions having a charge of 1+ only.In contrast,the elements of group IB —copper,silver,and gold—are comparatively inert.They are similar to the alkali metals in that they exist as 1+ ions in many of their compounds.However,as is characteristic of most transition elements,they form ions having other charges as well.
The elements of group IIA are known as the alkaline earth metals.Their characteristic ionic charge is 2+.These metals,particularly the last two members of the group,are almost as reactive as the alkali metals.The group IIB elements—zinc,cadmium,and mercury are less reactive than are those of group II A5,but are more reactive than the neighboring elements of group IB.The characteristic charge on their ions is also 2+.
With the exception of boron,group IIIA elements are also fairly reactive metals.Aluminum appears to be inert toward reaction with air,but this behavior stems from the fact that the metal forms a thin,invisible film of aluminum oxide on the surface,which protects the bulk of the metal from further oxidation.The metals of group IIIA form ions of 3+ charge.Group IIIB consists of the metals scandium,yttrium,lanthanum,and actinium.
希望今天不会让俺太失望,不要google的翻译哦!
1楼的是google翻译来的
英语翻译Each horizontal row of elements constitutes a period.It should be noted that the lengths of the periods vary.There is a very short period containing only 2 elements,followed by two short periods of 8 elements each,and then two long period
Each horizontal row of elements constitutes a period.It should be noted that the lengths of the periods vary.There is a very short period containing only 2 elements,followed by two short periods of 8 elements each,and then two long periods of 18 elements each.The next period includes 32 elements,and the last period is apparently incomplete.With this arrangement,elements in the same vertical column have similar characteristics.These columns constitute the chemical families or groups.The groups headed by the members of the two 8-element periods are designated as main group elements,and the members of the other groups are called transition or inner transition elements.
周期表的每一行构成一个周期.注意每一周期的长度不同,最短的周期只有两个元素,下面两个周期是短周期,各有8个元素,再下面是两个长周期各有18个元素.再下一个周期有32个元素,最后一个周期明显是不完整周期.周期表按这样的排列,同一列元素具有相似的性质,这些列称为族.其中以8元素周期中的元素打头的族称为主族.其它族中的元素称为过渡元素或内过渡元素.
In the periodic table,a heavy stepped line divides the elements into metals and nonmetals.Elements to the left of this line (with the exception of hydrogen) are metals,while those to the right are nonmetals.This division is for convenience only; elements bordering the line—the metalloids-have properties characteristic of - both metals and nonmetals.It may be seen that most of the elements,including all the transition and inner transition elements,are metals.
在周期表中有一条阶梯状的粗线将所有元素分为金属和非金属.线的左边（除氢以外）都是金属,右边都是非金属.这样的区分只是为了方便,在线附近的元素称为半金属,同时具有金属和非金属的特性.可以看出,大部分元素包括所有的过渡元素和内过渡元素都是金属.
Except for hydrogen,a gas,the elements of group IA make up the alkali metal family.They are very reactive metals,and they are never found in the elemental state in nature.However,their compounds are widespread.All the members of the alkali metal family,form ions having a charge of 1+ only.In contrast,the elements of group IB —copper,silver,and gold—are comparatively inert.They are similar to the alkali metals in that they exist as 1+ ions in many of their compounds.However,as is characteristic of most transition elements,they form ions having other charges as well.
除了氢（一种气体）外,第一主族的元素构成了碱金属.它们非常活泼,在自然界不能以单质存在,然而他们的化合物到处可见.所有碱金属元素只能形成+1价离子.而第一副族的铜银金相对惰性,它们和碱金属相似之处在于它们在很多化合物中呈+1价,但它们和其它大多数过渡金属一样,其离子具有其它价态.
The elements of group IIA are known as the alkaline earth metals.Their characteristic ionic charge is 2+.These metals,particularly the last two members of the group,are almost as reactive as the alkali metals.The group IIB elements—zinc,cadmium,and mercury are less reactive than are those of group II A5,but are more reactive than the neighboring elements of group IB.The characteristic charge on their ions is also 2+.
第二主族称碱土金属.其特征的离子价态为+2.这些金属尤其是最下面的两个差不多和碱金属同样活泼.第二副族元素---锌镉汞没有第二主族元素活泼,但要比相邻的第一副族元素活泼,其特征的离子价态同样为+2.
With the exception of boron,group IIIA elements are also fairly reactive metals.Aluminum appears to be inert toward reaction with air,but this behavior stems from the fact that the metal forms a thin,invisible film of aluminum oxide on the surface,which protects the bulk of the metal from further oxidation.The metals of group IIIA form ions of 3+ charge.Group IIIB consists of the metals scandium,yttrium,lanthanum,and actinium
除了硼以外第三主族的元素也是比较活泼的金属.铝看起来对空气惰性,但这一现象是由铝在其表面可以形成一种肉眼看不见的氧化铝薄膜引起的,从而阻止内部被进一步氧化.第三主族金属可形成正三价离子.第三副族包括了金属钪、钇、镧和锕.
每一行的元素构成的。应该指出,不同长度的时期。有很短的时间内只包含2元素,紧随其后的是两个短的8个元素,然后两个长期的18个元素。下一个阶段包括32元素,和上次月经是显然不完整。这样的安排、元素在相同的垂直柱有相似的特点。这些柱构成了家庭或组。化学这个团体的成员由两8-element时期被指定的主力阵容的元素,和其他组的成员被称为转换或内在过渡元素。
在这个元素周期表,重踏竖线成金属和...
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每一行的元素构成的。应该指出,不同长度的时期。有很短的时间内只包含2元素,紧随其后的是两个短的8个元素,然后两个长期的18个元素。下一个阶段包括32元素,和上次月经是显然不完整。这样的安排、元素在相同的垂直柱有相似的特点。这些柱构成了家庭或组。化学这个团体的成员由两8-element时期被指定的主力阵容的元素,和其他组的成员被称为转换或内在过渡元素。
在这个元素周期表,重踏竖线成金属和非金属元素。元素左边的这条线(除了氢)是金属,而右边是非金属等材料。这个区域是为了方便;元素接壤的线上时metalloids-have性能特点的金属和非金属等材料,两者。它可以看到大部分的元素,包括所有的转换和内在的过渡元素,是金属。
除了氢气体的元素组是弥补碱金属的家庭。他们是非常活泼的金属,他们永远都不会被发现的元素,在自然状态。然而,他们的化合物是普遍的。所有成员的家庭,碱金属离子的形式有1 +。相反,-copper元素组IB、银、gold-are较为活跃的。他们是相似的,他们存在碱金属离子在1 +许多化合物。然而,大多数过渡元素的特征,形成离子在其他费用。
IIA组元素被称为碱土金属。其特点是离子费用2 +。这些金属,尤其是最后的两个群体,几乎像无功碱性金属。这个小组IIB elements-zinc汞、镉、少的反应比第二组A5,但更多的活性比邻近的元素组盈透。在他们的离子特征也2 +。
除了硼、集团IIIA也相当反应的金属元素。铝似乎对反应迟钝,但这种行为与空气的根源是金属形成瘦,无形的电影的氧化铝表面上,防止大部分金属免受进一步氧化。金属离子的小组IIIA表格3 +费用。用户组组成的scandium金属、稀土镧系、钇、actinium。
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每一行的元素组成一个周期。它应当被表明不同周期变化的长度。有一个非常短的周期只包含两个元素（这是元素周期表的第一行即第一周期包含氢和氦），紧接着是两个由八个元素组成的短周期，然后是两个包含十八个元素的长周期。再接下来是一个包含三十二个元素的周期，并且最后一个周期是明显不完整的。在这样的安排下，在同一竖列的元素有相似的化学特性。这些元素列形成了一个一个的化学元素族或组。这些以八元素周期为开端的族被指...
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每一行的元素组成一个周期。它应当被表明不同周期变化的长度。有一个非常短的周期只包含两个元素（这是元素周期表的第一行即第一周期包含氢和氦），紧接着是两个由八个元素组成的短周期，然后是两个包含十八个元素的长周期。再接下来是一个包含三十二个元素的周期，并且最后一个周期是明显不完整的。在这样的安排下，在同一竖列的元素有相似的化学特性。这些元素列形成了一个一个的化学元素族或组。这些以八元素周期为开端的族被指定作为主族元素，另外一些族的元素被称为过渡或内过渡元素。
在这个周期表中，有一个黑色加重的线框将金属元素和非金属元素隔分开来。在黑色加重线的左边的元素（除去氢元素）都是金属元素，而那些线的右边的元素则是非金属元素。这个区分只是为了方便；用线框起来的元素---非金属元素---具有金属特性的元素---既有金属特性也有非金属特性的元素（从左到右这样分布）。可以看到大部分的元素，包括所有的过渡和内过渡元素，都是金属。除了氢元素，气体元素之外，IA族元素（元素周期表中左第一列）是由碱性金属族的元素组成的。它们是非常容易反应的金属，并且不能在自然界中以元素的单质形式被发现。但是它们的化合物分布非常广泛。所有的碱性金属族的元素，形成 只有（1+）正一价的离子电荷。相反地是，IB族的元素---铜，银和金--是相当惰性的。它们在许多化合物中以正一价离子形式出现的时候，它们和碱金属特征相似。但是，由于大部分过渡元素的特性，它们也形成其他价电荷的离子。
IIA族的元素被称为碱土金属。它们的特有的离子是正二价。这些金属，特别是族的最后的两个金属元素，几乎和碱金属一样活跃。IIB族元素---锌，镉和汞，与IIA5族的那些元素相比是较不活跃的，但是比相邻的IB族的元素要更活跃一些。它们的离子特有的电荷也是正二价。
除了硼之外，IIIA族元素也是活跃的元素。铝在空气中表现得似乎是惰性的，但是，这种行为在把铝变得很薄的情况下就改变了，铝的表面会形成一种无形的氧化铝的薄膜，以此保护大部分的金属被氧化。IIIA族的金属形成正三价的离子。IIIB族由金属钪，钇，镧系和锕系金属组成。
纯手工翻译，并对照了元素周期表，希望可以帮到你。
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