Example: mm- Prefix meter and unit milli Directions : Look At Symbol/ abbreviation in the first column and list the prefix and unit that compose it.

SymbolPrefixUnit

Mm

kg

hs

cm

mL

g

ųm

kJ

L

hm

dL

It is sure ( overimitation)

Idon't have a clue what this

Why are people no giving enough information these days

Answer: 1s²  2s²  2p⁶explanation: from the periodic table, we can note that the neutral fluorine  has 9 electrons (symbol is shown in the attached image)therefore, the configuration of neutral fluorine  is: 1s²  2s²  2p⁵now, f⁻  means that the neutral fluorine  gained one extra electron. this means that f⁻  has 10 electrons.the extra electron will occupy the 2p level to make it complete.the configuration now  is: 1s²  2s²  2p⁶comparing between both f and f⁻, we can note that f⁻  has now complete orbitals which means that it is more stable than f based on lewis postulatehope this : )