noble gases
uniquely stable, they __to participate in no chemical reactions. but by understanding the stability of the noble gases, physicists discovered the key to chemical bonding itself. dmitri mendeleev added the noble gases to his periodic table in 1902, where he arranged the elements in rows and columns __to their atomic weight.mendeleev was able to see repeating (or periodic) _in their properties. the noble gases appeared __in the periodic table, occurring in every eighth position, at least amongst the lighter elements.
Analysis:
1.Option answersseemed
Problem Solving Ideas] show show, insist insist, refuse rejection, seem to seem, empty before saying that they are very stable, and then say not to participate in any chemical reaction, excluding the word with the negative meaning of refuse, insist on fixed collocation, exclude, show to do does without this usage, seem to do seem, so reasonable.
Investigation Skills] This empty space examines word meaning and contextual understanding.
They are very stable and do not seem to be involved in any chemical reactions.
2.Option answersaccording
Problem Solving Ideas] according to, opposite, put put, turn turn, so choose according.
Investigation Skills] This empty examines the meaning and context of the word.
In 1902, Dmitry Mendeleev added noble gases to the periodic table, arranging elements in rows and columns according to their atomic weight.
3.Option answerspatterns
Solution]"patterns"is the most accurate word to describe the repetition of the nature of the elements found by Mendeleev. "Features refers to the characteristics of the element itself, not necessarily the nature of periodic repetition. While elements have a variety of different characteristics, they are not necessarily repeated in nature. Therefore,"features"Not true.
Mendeleev found a description of periodic repetitions. "ways" (method) and"works" (work) is not suitable to describe the periodic repetition that Mendeleev found. These two words are not directly related to the nature and periodicity of the elements. Mendeleev discovers periodic repetitions by observing and sorting out the properties of the elements, rather than by a particular method or work.
Investigation Skills] This empty examines the meaning and context of the word.
Mendeleev was able to see patterns of repetition (or periodicity) in their nature.
4.Option answersregularly
Problem Solving Ideas] Unevenly, vaguely, regularly, normally. The appearance of every 8 positions mentioned after the empty is a regular presentation.
Investigation Skills] This empty examines the meaning and context of the word.
Noble gases occur regularly in the periodic table, at least in the lighter elements, at least once every 8 positions.
Translation:
They are very stable and do not seem to be involved in any chemical reactions.
uniquely stable, they seemed to participate in no chemical reactions.
But by understanding the stability of noble gases, physicists have discovered the key to the chemical bonds themselves.
but by understanding the stability of the noble gases, physicists discovered the key to chemical bonding itself.
In 1902, Dmitry Mendeleev added noble gases to the periodic table, arranging elements in rows and columns according to their atomic weight.
dmitri mendeleev added the noble gases to his periodic table in 1902, where he arranged the elements in rows and columns according to their atomic weight.
Mendeleev was able to see patterns of repetition (or periodicity) in their nature.
mendeleev was able to see repeating (or periodic)patterns in their properties.
Noble gases occur regularly in the periodic table, at least once every 8 positions in the lighter elements.
the noble gases appeared regularly in the periodic table,occurring in every eighth position, at least amongst the lighter elements.