Silicon dioxide has a formula of sio2 and forms a giant structure with each silicon atom bonded to 4 oxygen atoms and each oxygen atom bonded to two silicon atoms. 5.1 will its bonding be ionic or covalent? 5.2 use a dot and cross diagram to illustrate its bonding. 5.3 how many lone pairs are in each sio2 "unit"? 5.4 how many double bonds does it form? 5.5 give the formulae of 5.5.1 sulfuric acid 5.5.2 zinc nitrate 5.6 give the name of koh.

b) nuclear ive learned that in a pedtrodic table

colorless gas, exhibiting a blue glow when placed in an electric field

b) solid

its a type of rock

percent abundance for cu-63 can be shown as:

63 x + 65 (1-x) = 62.9296

65 - 62.9296 = 2 x

x = 1.035

thus, percent abundance for cu-63 is 1.035

percent abundance for cu-65 can be shown as:

63 x + 65 (1-x) = 64.9278

65 - 64.9278 = 2 x

x = 0.0361

thus, percent abundance for cu-63 is 0.0361

the mass spectrum of cu-63 showing the intense peak as, this isotope is found in nature more abundantly around 92.38 % in comparison to cu-65 which is found 62.58 % naturally