Acar driving at 105 km/h. what is the speed in mi/min?
(1 mi = 1.61 km)

1.087 mi/min

Explanation:

Given data:

Speed of car in Km/h = 105

Speed of car in miles/min = ?

Solution:

It is given that one miles = 1.61 Km

while it is known that one hour = 60 minutes

Thus in order to convert the km/h into mi/min we will divide the given value by 96.561.

105 / 96.561

1.087 mi/min

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.