Question

Alkali Metals:a. What is the group number? ______b. Are these metals reactive? ______c. Do these metals occur freely in nature? _____e. Are these metals soft or hard? __________f. Name the two most reactive elements in this group? ___________ and ___________g. What happens when they are exposed to water? ____________________

Answer 1

Answer:

a) Group 1

b) Yes, they are very reactive

c) They do not occur freely in nature

e) Soft

f) Francium and Caesium

g) They react explosively to produce hydrogen gas

Explanation:

Alkali metals are metals that belongs to Group 1. They are known to be very reactive due to its tendency to donate their lone electron to other element to attain their octet configuration.

Due to their reactive nature, they do not occur freely in nature unless when combined with other elements.

These group1 metals are known to be soft metals due to their low ionization energy. The two most reactive element in the group are Francium and caesium since reactivity of elements increases from top to bottom of the periodic table.

When these metals are exposed to water, they react explosively to produce hydrogen gas.