I am positive and my place is the heart of the atom. I am very reliable as my identity never changes. Who am I?

I have no charge, I am electrically neutral, With protons and electrons, I form a subtle duel. What am I?

I am the number, the identity of an element, The protons define me, a crucial testament. What am I?

Without any charge, I'm electrically plain, Inside the nucleus, where I remain. I add mass but no charge to the mix, What am I,

I am small, I am light, In orbit, I dance, never out of sight. What am I?

I am electrically charged, positive and bright, Count me in the nucleus, shining with might. What am I?

I am the center, where it all begins, With protons and neutrons held within. What am I?

I am neutral, chargeless and serene, Alongside protons, I can be seen. Contributing to mass without electrical sting, What am I, this uncharged thing?

I am the total number, the sum of the parts, Protons and neutrons, the nucleus imparts. What am I?

I am the key, the atomic symbol's call, Defined by protons, I stand tall. Elemental identity, I clearly state, What am I