Why is it necessary to wear safety goggles and a lab apron while performing experiments in the lab?

Answer,googles helps that no chemical will come into contact with your eyes while an apron prevent your clothes being in touch with your clothes

Explanation:

wear a lab coat

read any safety information, such as the SDS before he begins the experiment

wear goggles

Explanation:

my brain:)

alkaline metals are lithium, sodium, rubidium, potassium, cesium and francium.

alkali metals have electronegativity from 0.7 to 1, lowest in periodic table of elements, which means that alkali metals (i group in periodic table) has positive oxidation number in compounds.

electronegativity is a chemical property that describes the tendency of an atom to attract a shared pair of electrons towards itself.

alkaline metals (far left in main group) have lowest ionizations energy and easy remove valence electrons,

for example, potassium is the alkali metal and has a single valence electron in the outer electron shell.

electron configuration of potassium is: ₁₉k 1s²2s²2p⁶3s²3p⁶4s¹.

they can not exist alone in nature, because they are very reactive.

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explanation: