# What is the number of protons housed in the nucleus?

Apr 5, 2017

The number of protons housed in the nucleus gives $Z$, $\text{the atomic number..........}$

#### Explanation:

$Z$ gives the number of positively charged, massive particles present in the nucleus (what do we call these?). And $Z$ gives the identity of the atom absolutely:

$\text{Z=1, the element is hydrogen.........}$

$\text{Z=2, the element is helium.........}$

$\text{Z=3, the element is lithium.........}$

$\text{Z=4, the element is beryllium.........}$

$\text{Z=25, the element is manganese.........}$

$\text{Z=92, the element is uranium.........}$

For a given element, say manganese, how many electrons are present in the neutral atom? You should be able to answer this pdq.