H
I
1
"
C=C
1
I
H
What is the IUPAC name

Asample of radium-226 will decay 1/4 of its original amount after 3200years. what is the half-life of radium-226?

Using the periodic table, complete the table to describe each atom. type in your answers.a ? b? c? d? e? f?

The characteristic of two different types of reactions are shown below. reaction a: electrons are gained by the atoms of an element. reaction b: protons are lost by the atom of and element. which statement is true about the atoms of the elements that participate in the two reactions? a: their identity changes in both reaction a and b. b: their identity changes in reaction a but not b. c: their identity changes in reaction b but not a. d: their identity remains the same.