Find the half-life of an element, which decays at a rate of 3.411% per day?

The half-life of an element is 20 days.

Explanation:

Radioactive decay of reaction follows first order kinetics, and  half life of an element is given as:

= Decay constant

Decay constant of an element=

= half-life of an element

Hence, the half-life of an element is 20 days.

b. acid is the correct answer @jayxboof all social media

acid : acids are those which accepts an electron-pairs.

base : bases are those which donates ab electron-pairs.

alkali : it is a base that dissolves in water. it is basically a base and the ph greater than 7.

hydroxide ion : it is a poly-atomic ion which is negatively charged.

periodic trends is an atom that gets larger as the number of electronic shells increase, the radius of atoms increases as you go down a certain group in the periodic table of elements. in general, the size of an atom will decrease as you move from left to right of a certain period.