In which group of the periodic table do you find alkali metals? a. 8ab.2ac.1ad.7a

C

Explanation:

Alkali metals are those elements found in group 1A. They are the very first elements one encounters at the extreme left hand side of the periodic tab!e. They are extremely reactive and are the most electro positive of all the metals. They include; Li, Na, K Rb, Cs, Fr.

out of these options:

ability to burn paper

pure sodium reacting violently with water

the boiling point of water

helium does not tend to react with anything

i would say this is a physical property:

helium does not tend to react with anything

why? :

i said helium does not tend to react with anything because well, it reacts to ! but ability to burn paper, pure sodium reacting violently with water, & the boiling point of water are chemical or

physical properties: the properties of a substance that can be observed without changing the chemical makeup of the substance

chemical properties: properties of a substance relating to the chemical nature and reactivity of the substance

i don,t know so just answer mine