Quizzes, tests, exercises and puzzles for English as a Second Language (ESL), English as a foreign language (EFL), Teaching EFL (TEFL), Test of EFL (TOEFL), English for speakers of other languages (ESOL), Teaching ESOL (TESOL), TOEIC.
Element
Element : chromium
Symbol : cr
Atomic no. : 24
Melting Point (deg c) : 1907
Boiling Point (deg c) : 2671
Discoverer : vauquelin (1797)
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