دیکشنری فارسی

atomic number 81

ریشه و کاربرد

ریشه

From the Greek word 'thallos', meaning 'green twig'.

مثال

  • Thallium has an atomic number of 81.
  • The atomic number 81 indicates that a thallium atom has 81 protons.
  • Thallium is located in group 13 and period 6 of the periodic table due to its atomic number 81.

تعریف انگلیسی

noun
  1. a soft grey malleable metallic element that resembles tin but discolors on exposure to air; it is highly toxic and is used in rodent and insect poisons; occurs in zinc blende and some iron ores “Substance Holonyms: zinc blende, blende, sphalerite”

همین دیکشنری روی گوشی

همهٔ ۲۹۱٬۲۱۲ واژه، بدون نیاز به اینترنت.

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