Define and explain sublimation and name the substance that sublime directly on heating​

Sublimation is the transition of a substance directly from the solid to the gas state, without passing through the liquid state. ... So, all solids that possess an appreciable vapour pressure at a certain temperature usually can sublime in air (e.g. water ice just below 0 °C).

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Explanation:

ssf sublimation is when the trasition of a substance directly from the solid to the gas waste without directy passing through the liquid state so that all solids that possess an appreciable vapour pressure at a certain temperature usually can sublime in air

atomic mass = 39

number of neutrons = 20

number of protons= 19

electronic configuration = 1s2 2s2 2p6 3s2 3p6 4s1

the number of electron in first shell = 2

number of electrons in n=3 shell = 8