More Commonly Misspelled Words Words You Always Have to Look Up Your vs. You're: How to Use Them Correctly Popular in Wordplay See All More Words with Remarkable Origins 12 Words Whose History Will Surprise You 8 Words for Lesser-Known Musical Instruments ...
Why is '-ed' sometimes pronounced at the end of a word? What's the difference between 'fascism' and 'socialism'? More Commonly Misspelled Words Words You Always Have to Look Up Popular in Wordplay See All More Words with Remarkable Origins ...
Define The period. The period synonyms, The period pronunciation, The period translation, English dictionary definition of The period. the present or current time, as distinguished from all other times. See also: Period Webster's Revised Unabridged Dicti
For period 8, which includes elements which may be synthesized after 2010, see the extended periodic table. Chemical elements in the first period Main article: Period 1 element Group1/172/18 # Name 1 H 2 He The first period contains fewer elements than any other, with only two, hydrogen ...
直播片段-前缀peri-, period, periodic, periodic table 692022-07 3 直播片段-词根homo.词根heter.homosexual,heterosexual 542022-07 4 直播片段: 后缀-ism, organism, microorganism 542022-07 5 直播片段-一天背100个单词 522022-07 6 直播片段-背单词的最快方法 602022-07 7 四级/六级/考研-empty-handed,sho...
periodic周期的;定期的 adv. periodically定期地;周期性地;偶尔;间歇 n. periodical期刊;杂志 periodicity[数] 周期性;频率;定期性 period英英释义 noun the completion of a cycle, a series of events, or a single action : conclusion an utterance from one full stop to another : sentence ...
Word family adjectiveperiodicperiodicalnounperiodicalistperiodicityperiodizationperiodic tableperiod pieceperiodadverbperiodicallyverbperiodizeRelated topics: Human, Letters & punctuation, School, Sport, Biologype·ri·od1 /ˈpɪəriəd $ ˈpɪr-/ ●●● S1 W1 AWL noun [countableC] 1...
In the periodic table of the elements, elements are arranged in a series of rows (or periods) so that those with similar properties appear in vertical columns. Elements of the same period have the same number of electron shells; with each group across a period, the elements have one more ...
period of two months两个月时间 词组短语 period of time一段时间;时段 long period长期的;长周期 short periodadj. 短周期的;短过期的 transition period过渡时期 construction period施工期 time period时期,期间 development periodn. 发展期;发育期;开发期 ...
1) This question is about the Periodic Table.a) How many elements are there in period 3 of the Periodic Table?(1)b)Place the first 3 elements of period 3 in order of increasing reactivity.(1)c) Explain your reasoning to part (b).(1)d) Mark with an × the statement that best des...