Question

i need help on number 2 thank you

2. When were the elements discovered? Using a periodic table color elements discovered between BC and 1600 AD green, elements discovered between 1601 and 1900 blue, and elements dis- covered between 1901 and the present red. FIGURE 12.2 NORE VILA OASES NA IVA VA VIA 1.008 4002 19.00 2018 12.01 16 DO 1031 14.01 Thesition Mets 12 11 30 21 Mn Mg AB IVB VB VI VIIB VIIB 27.00 21.00 30.97320615.45 39 95 21 DO 240 22 23 26 27 24 28 30 29 31 32 K Ca Sc Ti V V Cr Cr Mn Fe Co Ni Cu Zn Ga Ge As Se 19104040404740090046.00024 11.30 11.10 1161.55653169. 77259749273.9619.903110 39 40 41 42 Zr Nb Mo Ru Rh PM | No Cd | | | | | | | | Ắc 89191991999) 1 1019106102011241141 55 t | a . Ta W Re Pt Au TIPb в Ро At 1371319 1 09102921801922 1951 1910.2006 20442072220901209 L LP 104 105 106 107 101 100 110 114 115 116 Fr Ra ACRE ME Ds 12 Le 20210261262) 263) (262) (265) (263) Ru | | | Mb | Mo | Te | Ru 112 RE Ob Bh Sg 60 Ce Pr Nd 140.114091442 61 Pm (147) 63 Eu 1520 64 Gd 157. 3 65 Tb 158.0 06 Dy 1625 Lanthanide series 62 Sm 150.4 9 Pu (244) 07 Ho 164. 99 Es (252) 08 Er 1673 100 Fm ( 257) 09 Tm 168.9 101 Md (253) Yb 1730 102 No 0259) Lu 175.0 103 Lr 060) 92 93 ThPa Am (43) Cm (247) Bk (247) CI 251) 38.0 (237) Actinide series 3. Which element derives its name from the German word Kobald meaning goblin? The trement is Cobalt (Col.

Answer 1

The element Cobalt (Co) derived its name from the German word Kobald which means goblin or evil spirit .

Since miners, which extract mines from earths crust found it lethal and irritating as it was degrading the other minerals so they named it as evil spirit or Kobald in German.