i am a main group or representative element. i am located in the second period. i am a metalloid. who am i

the answer is tantalum!

The answer is Boron.

Explanation:

Boron is included in the main group of elements. Boron is also located in the second group. And boron is a metalloid.

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

a polar bond is formed when electrons are shared unevenly between atoms