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It is the Sr+2 ion. It is formed by a Sr atom.

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How many proton and electron in antimony 121?

Antimony, Sb, has the atomic number 51. The atomic number is the number of protons in the nuclei of all antimony atoms, so Sb atoms have 51 protons. In a neutral atom, the number of protons equals the number of electrons. So Sb atoms also have 51 electrons. Antimony-121 is an isotope of antimony with a mass number of 121. From the mass number, we can subtract the number of protons and get the number of neutrons in the atoms of the 121Sb isotope, which is 121-51 = 70 neutrons.


What is the protons neutrons and electrons for mercury?

Atomic weight of mercury is 201 80 protons 80 electrons 121 neutrons Mercury has 7 stable isotopes, with 116, 118, 119, 120, 121, 122 and 124 neutrons. The 116 neturon isotope is pretty rare on Earth (0.15%).


Protons neutrons and electrons for mercury?

portons 80 neutrons 121 electrons 80


How many neutrons does antimony contain?

Antimony (symbol Sb) has three isotopes: 121Sb, 123Sb, and 125Sb. The 121 isotope has 70 neutrons, and the 123 isotope has 72 neutrons. The 125 isotope isn't stable and will decay, but it has 74 neutrons.


How many electrons neutrons and protons are found in gold?

79 protons, 79 electrons and 118 neutrons. a neutral gold atom has 79 protons about 121 neutrons and 79 electrons


What is inside of a mercury atom?

80 protons, 80 electrons, 121 neutrons


How many protons and electrons does mercury have?

Mercury (Hg) can ONLY have 80 protons, or else it cannot be mercury. The difference between its mass number (201) and 80 is 121, which is the number of neutrons. These can vary and are called isotopes. The number of protons can always only be 80 for mercury, tho.


How many prtons and nuetrons are in an element with an atomic number of 80?

An element with an atomic number of 80 is mercury (Hg). Mercury has 80 protons and approximately 121 neutrons in its most common isotope, mercury-201 (since 201 - 80 = 121 neutrons).


What is the number of neutrons and electrons of mercury?

The atomic number of Mercury(Hg) is 80; since atomic number of an atom= No. of protons.Thus No. of protons in Mercury is 80. Also No. of protons = No. of electrons (In an neutral Atom; which is not an ion).Therefore No. of electrons is also 80. Next, Mass number(Atomic Mass) of Mercury is 160. Mass Number(Atomic Mass)= No. of Protons + No. of Neutrons. Hence calculating that we get No. of Neutrons also to be 80. FYI; Electrons have negligible mass so they are not included in calculating Mass of an atom, which only requires the nucleus which contains only protons and neutrons


What element has 21 neutrons?

An element with 21 neutrons would have an atomic number of 11, as the number of protons in an atom determine its atomic number. Therefore, the element would be sodium (Na), which has an atomic number of 11 and typically has 12 neutrons.


If an atom has 80 protons and 121 neutrons and is not in an excited state how many electrons does the atom have?

The number of electrons in a neutral atom is equal to the number of protons, which is 80 in this case. This is because in a neutral atom, the positive charge of the protons is balanced by the negative charge of the electrons.


How many neutrons does 121Sb have?

121Sb has 71 neutrons. This can be calculated by subtracting the atomic number of antimony (Sb), which is 51, from the mass number, which is 121.