| Element in atomic clocks |
Newsday |
30 Mar 2025 |
| Soft, silvery-gold alkali metal |
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| Element No. 55 |
Family Time |
01 May 2022 |
| Soft metal |
Thomas Joseph |
27 Jan 2022 |
| Element in atomic clocks |
Newsday |
28 Aug 2020 |
| Very reactive element |
Premier Sunday |
16 Dec 2018 |
| Element used in atomic clocks |
The Washington Post |
22 Nov 2018 |
| Element used in atomic clocks |
LA Times Daily |
22 Nov 2018 |
| Element used in atomic clocks |
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| Atomic no. 55 |
Universal |
27 Aug 2017 |
| Atomic no. 55 |
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| Electropositive element |
The Washington Post |
03 Apr 2016 |
| Atomic number 55 |
USA Today |
11 Jun 2015 |
| Atomic number 55 |
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| Element used in atomic clocks |
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| Metal in atomic clocks |
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| Element in atomic clocks |
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| Element found in photoelectric cells |
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| Element in atomic clocks |
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| Element in atomic clocks |
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| Element #55 |
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| Element in photoelectric cells |
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| Electropositive element |
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| Soft, silvery-white element |
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| Highly reactive metal |
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| Element used in photoelectric cells |
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| Element #55 |
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| Element used in photoelectric cells |
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| Element used in photoelectric cells |
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| Atomic number 55 |
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| Element #55 |
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| Element used in photoelectric cells |
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| Photoelectric cell component |
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| Photoelectric cell element |
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