Answer:
x = 70°
The external angle of a triangle is equal to the sum of the 2 opposite interior angles.
120° is an external angle of the triangle, thus
x + 50 = 120 ( subtract 50 from both sides )
x = 70
As the elements of group 17 are considered in order of increasing atomic number, there is an increase in ATOMIC RADIUS. It is a measure of the size of the atoms.
<h3>What is the atomic radius?</h3>
The atomic radius can be defined as a measure of the size of the atoms of a given chemical element.
The atomic radius can be calculated as the mean distance from the center of an atomic nucleus to the shells of the negatively charged electrons.
The atomic radius is considered for solid elements since this measurement can vary according to the states of matter.
Learn more about the atomic radius here:
brainly.com/question/15255548
The dotted line showing a new potential energy diagram with a shorter activation energy hill than that in the original potential energy diagram best represents it.
<h3>What is Potential energy?</h3>
This is the type of energy present in a body by virtue of its position.This can be converted to various forms of energy.
In a chemical reaction, the change in potential energy that occurs when a catalyst is added to a chemical reaction is best represented by dotted line showing a new potential energy diagram with a shorter activation energy hill than that in the original potential energy diagram.
Read more about Potential energy here brainly.com/question/14427111
Answer:
where are the following solutions?
