The sodium atom contains 11 electrons, 11 protons, and 12 neutrons. What is the mass number of sodium?

• Na Atomic Model
• Na Atomic Mass

We would like to show you a description here but the site won’t allow us. Teletype for Atom. Great things happen when developers work together—from teaching and sharing knowledge to building better software. Teletype for Atom makes collaborating on code just as easy as it is to code alone, right from your editor. Generally, Avogadro number of atoms of sodium weigh 23 g. = 6.022. 10^23 atoms weigh 23 grams = 1 atom weighs 23/(Avogadro number) grams = 3.8. 10^-23 grams. So, one atom of sodium weighs 3.8. 10^-23 grams (approximately).

2 Answers

Na Atomic Model

Explanation:

The mass number is the sum of the neutrons and protons in an atom.
So 11 protons + 12 neutrons= 23 The best photo editing for mac.

We have the #'^23Na# isotope.....i.e. #'mass number'=23#.

Explanation:

A sneakier question would have asked:

Na Atomic Mass

Ntfs for mac for lion. #'an atom contains 11 protons, and 12 neutrons; how may electrons'##'in the neutral atom; what is the atom?'#.

The sum of neutrons and protons, the massive nuclear particles, gives the mass number, with which we often label the elemental symbol as a left hand superscript. But the number of #'nucular protons'# Photoshop cs5 for mac with crack. , i.e. #Z#, UNEQUIVOCALLY identifies the atom; #Z=11# for sodium, #Z=10# for neon; #Z=12# for magnesium.

It is not too difficult to incorporate these ideas into your understanding, and if you have a Periodic Table in front of you (and you should have one NOW!) these problems are straightforward.

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