Ijust need advantages and disadvantages of nuclear, hydroelectric, and wind power

Solar Energy advantages - Advantages of using solar energy are pollution-free, noise-free, on installation it produces free energy, clean and renewable.

Solar energy disadvantages-

expensive to use for large-scale energy production

only practical in sunny areas

Wind energy advantages-

relatively inexpensive to generate

does not produce air pollution

Wind energy disadvantage-

noise pollution

takes up alot of land

Hydroelectric advantages-

does not produce air pollution

Hydroelectric Disadvantages-

dams disrupt a river's ecosystem

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.

answer: -

reaction:

na + cl ⇌ nacl

balanced chemical equation:

na + 2cl ⇌ nacl2

sodium + clorine goes to form sodium chloride (table salt).

the product is nacl2.

and the reactants are na and cl.

(note: if you don’t know what ⇌ means, read below: -

⇌(double head arrow) means reversible reaction).