Calcium is silver to gray solid metal that develops a pale yellow tint. It is element atomic number 20 on the periodic table with the symbol Ca. Unlike most transition metals, calcium and its compounds exhibit a low toxicity. The element is essential for human nutrition. Take a look at cal...
Cube with Calcium number 20 periodic table 3d rendering,站酷海洛,一站式正版视觉内容平台,站酷旗下品牌.授权内容包含正版商业图片、艺术插画、矢量、视频、音乐素材、字体等,已先后为阿里巴巴、京东、亚马逊、小米、联想、奥美、盛世长城、百度、360、招商银行、工商银
Calcium (Ca) button on the periodic table of elements with atomic number and copy space for a chemistry science concept or experiment.,站酷海洛,一站式正版视觉内容平台,站酷旗下品牌.授权内容包含正版商业图片、艺术插画、矢量、视频、音乐素材、字体等,已先后为
Atomic number 20; atomic weight 40.08; melting point 842°C; boiling point 1,484°C; specific gravity 1.54; valence 2. See Periodic Table. Vitamin Any of various fat-soluble or water-soluble organic substances that are essential in minute amounts for normal growth and activity of living ...
Atomic number 20; atomic weight 40.08; melting point 842°C; boiling point 1,484°C; specific gravity 1.54; valence 2. See Periodic Table. [Latin calx, calc-, lime; see calx + -ium.] American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton...
Calcium (Ca) is a very reactive silvery white metal belonging to Group IIA of the Periodic Table, and is, therefore, one of the alkaline earth elements. Berzelius and Pontin first prepared a Ca amalgam by electrolyzing lime in Hg, but Ca was first isolated as a metal in England by Sir...
(Ca), a chemical element in group IIA of Mendeleev’s periodic table. Atomic number, 20; atomic weight, 40.08; a silver-white, lightweight metal. The natural element consists of a mixture of six stable isotopes:40Ca,42Ca,43Ca,44Ca,46Ca, and48Ca, the most abundant of which is the ...
Calcium (Ca) is a very reactive silvery white metal belonging to Group IIA of the Periodic Table, and is, therefore, one of the alkaline earth elements. Berzelius and Pontin first prepared a Ca amalgam by electrolyzing lime in Hg, but Ca was first isolated as a metal in England by Sir...
Definition Alkaline-earth element of atomic number 20, group IIA of the periodic table. Aw 40.08. Valence 2. Six stable isotopes. General Description A silvery, soft metal that turns grayish white on exposure to air. Used in metallurgy. Air & Water Reactions Pyrophoric ignites in air when fin...
Calcium is a metal (alkaline earth) with a silvery color and a cubic crystal structure. This element belongs to group 2 and period 4 of the periodic table (Fig. 1). Calcium has 25 known isotopes of which 5 are stable (source of data: National Institute of Standards and Technology: http...