it is 12
The atomic number of an atom is the number of protons it has, so in this case, the atom of sodium has an atomic number of 11. The mass number of an atom is the sum of its protons and neutrons, so the mass number of this sodium atom is 23 (11 protons + 12 neutrons).
The neutral atom of sodium has 11 electrons. Sodium has eleven electrons in each of its atoms, as long as the atoms are neutral. You can determine this by looking at the atomic numbers on the periodic table. The atomic number is the number of protons in the nucleus of an atom. In a neutral atom, the number of electrons is equal to the number of protons. So, given the eleven electrons, you would look for the element with the atomic number eleven, which is sodium (Na).
An element with 11 protons will have atomic number 11, or sodium. If the element has 11 neutrons, then it has an atomic mass of 11+11 = 22. Therefore, the isotope Sodium-22 has 11 protons, neutrons, and electrons.
No, a silicon atom is larger than a sodium atom. This is because silicon has more electrons and protons than sodium, leading to a larger atomic radius.
A neutral atom with 11 electrons would, by definition, have to have 11 protons. In this case, we are talking about Sodium.
The neutral atom of sodium has 11 electrons.
The number of electrons in a neutral atom is equal to the atomic number; sodium has 11 electrons. The number of protons is the same.
A neutral sodium atom has 11 electrons. This corresponds to the atomic number of sodium, which is 11.
11 electrons in a neutrally charged atom of sodium . It is the same number as the number of protons and the Atomic Number. However, the sodium ion (NOT Atom) has lost one electron , so there are now 11 protons(+), and 10 electrons(-). Hence 11(+)10(-)= 1(+) Hence the sodium ion is written as 'Na(+)'.
The atomic number is 11 and atomic mass is 23. The number of protons and electrons in sodium is 11 and the number of neutrons is 12
The atomic number of an atom is the number of protons it has, so in this case, the atom of sodium has an atomic number of 11. The mass number of an atom is the sum of its protons and neutrons, so the mass number of this sodium atom is 23 (11 protons + 12 neutrons).
Sodium (Na) has a total of 11 electrons in the neutral atom. 1 of these is considered a valence electron, and the other 10 are considered core electrons.See the Related Questions for more information.
An atom with an atomic number of 20 has 20 electrons. The number of electrons in an atom is equal to its atomic number.
Sodium has an Atomic Number of 11 and an Mass Number of 23.This means an atom of Sodium has 11 Protons and therefore 11 electrons.
You cannot know for sure withoutmore information. An electrically neutral sodium atom (sodium has at. no. 11) will have the same number of electrons as protons; atomic number tells you the number of protons, so this atom has 11 protons and would have 11 electrons if electrically neutral, however, if the atom is charged, it could have more or fewer electrons. Sodium atoms in stars are highly ionized and may have just a few if any any electrons.
You cannot know for sure withoutmore information. An electrically neutral sodium atom (sodium has at. no. 11) will have the same number of electrons as protons; atomic number tells you the number of protons, so this atom has 11 protons and would have 11 electrons if electrically neutral, however, if the atom is charged, it could have more or fewer electrons. Sodium atoms in stars are highly ionized and may have just a few if any any electrons.
You cannot know for sure withoutmore information. An electrically neutral sodium atom (sodium has at. no. 11) will have the same number of electrons as protons; atomic number tells you the number of protons, so this atom has 11 protons and would have 11 electrons if electrically neutral, however, if the atom is charged, it could have more or fewer electrons. Sodium atoms in stars are highly ionized and may have just a few if any any electrons.