. The Philosophical magazine; a journal of theoretical, experimental and applied physics . Kx^>^\. 0 10 -JO 30 -Kl .SO 6(P 70 60 90 JOd UIJ i::0 ho iriO ICO 171) 1/10 ]^ll 200 210 22U 230 240 250 1^60 270 lao 290 3|U0 H »5=^;j| ^s, , -^ ,, 9, Chemical and P/it/sical Projyerties of Elements. 27 is non-metallic, very stable under ordinary conditions, and itsatom-fixing power is four. Oxj-gen is gaseous, chemicallyactive,but electronegative, and its atomicity is two. Fluorineis in all probability gaseous; it is chemically active, so muchso that it has never been isolated, power


. The Philosophical magazine; a journal of theoretical, experimental and applied physics . Kx^>^\. 0 10 -JO 30 -Kl .SO 6(P 70 60 90 JOd UIJ i::0 ho iriO ICO 171) 1/10 ]^ll 200 210 22U 230 240 250 1^60 270 lao 290 3|U0 H »5=^;j| ^s, , -^ ,, 9, Chemical and P/it/sical Projyerties of Elements. 27 is non-metallic, very stable under ordinary conditions, and itsatom-fixing power is four. Oxj-gen is gaseous, chemicallyactive,but electronegative, and its atomicity is two. Fluorineis in all probability gaseous; it is chemically active, so muchso that it has never been isolated, powerfully electronegative;and its atomicity is one. At this point the character of theelements suffers an abrupt change; and the next element(sodium) is a metal of the alkalies, and almost exactly repeatsthe properties of lithium. After sodium, as after lithium,come six elements, at small intervals of atomic weight; andthey repeat the changes and transitions that take place in theelements succeeding lithium. There is, first, magnesium, ametal of the alkalhie earths; and then an earth-metal (alumi-ni


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