Example: biology
Search results with tag "S block"
THE s -BLOCK ELEMENTS - NCERT
ncert.nic.inin the earth’s crust. Strontium and barium have much lower abundances. Beryllium is rare and radium is the rarest of all comprising only 10–10 per cent of igneous rocks† (Table 10.2, page 299). The general electronic configuration of s-block elements is [noble gas]ns1 for alkali metals and [noble gas] ns2 for alkaline earth metals. UNIT 10
THE s-BLOCK ELEMENTS - NCERT
ncert.nic.in300 CHEMISTRY Lithium and beryllium, the first elements ... Atomic number 3 11 19 37 55 87 Atomic mass (g mol–1) 6.94 22.99 39.10 85.47 132.91 (223) ... Solutions in liquid ammonia: The alkali metals dissolve in liquid ammonia giving deep blue solutions which are conducting