Do you expect to find an atom with 26 protons and mass number 52

iron element with mass number of 52

Explanation:

Given that  

26 protons and mass number 52

Number of protons = number of electron= atomic number = 26

Atomic mass  = number of  protons + number of  neutrons = 52

number of  neutrons = Atomic mass  - number of  protons = 52-26= 26

atomic number 26 means element is iron

therefore this is a iron element with mass number of 52

Element:

An element is a simplest type of a pure substance which is composed of only one type of matter. For examples; silver, gold platinum etc.

Isotopes:

The atoms of an element with different mass number or atomic mass are called isotopes. They have same number of protons and electrons but different number of neutrons.

the answer is the first option

explanation:

just googled it m8. not that hard

lol

a saline water is fed to a reverse osmosis unit at flow rate o rotameter connected to reject (retentate) line reads 8 installed in reject and permeate line reads 15.2 milli siemens/cm and 300 micro siemens/com respectively.