Any one element can ONLY have a single fixed number of protons. Th only element with a number of protons that sits between 50 and 75 in group 17 of the Periodic Table is Iodine (I), with 53 protons.
The element in group 16 with more protons than sodium but fewer protons than argon is sulfur (S). Sodium has 11 protons, sulfur has 16 protons, and argon has 18 protons.
That would be iodine with an atomic number of 53. The next group 17 element is astatine with atomic number 85.
The element with 2 more protons than oxygen is sulfur. Oxygen has 8 protons, while sulfur has 16 protons.
Lead has more protons in the nucleus of its atoms compared to tin. Lead has 82 protons while tin has 50 protons in its nucleus.
An element is a substance in which all atoms have the same number of protons. Each element is identified by its unique number of protons, known as the atomic number.
This chemical element is calcium (Ca).
The element you are looking for is iodine (I). It has 53 protons and is located in group 17 of the periodic table, which is known as the halogens. Iodine is commonly used in antiseptics and as a dietary supplement for thyroid health.
The element in group 16 with more protons than sodium but fewer protons than argon is sulfur (S). Sodium has 11 protons, sulfur has 16 protons, and argon has 18 protons.
All isotopes of an element have the same number of protons, otherwise they would not be the same element. What varies is the number of neutrons, they can be more or less than in the stable isotope(s) of the element.
That would be iodine with an atomic number of 53. The next group 17 element is astatine with atomic number 85.
calciumThe element sulfur's atomic number is 16, so there are 16 protons in its nucleus. The element bromine's atomic number is 35, and there are 35 protons it its nucleus. This means the element will have an atomic number between 16 and 35. Since the question asked which Group 2 element fits in that window, we can go to the periodic table and look down the column of Group 2 elements and find that calcium is the element so described. It has the atomic number 20, and that means 20 protons in its nucleus.Remember that the Groups on the periodic table of elements are the vertical columns, and they range from Group 1 to Group 18. Group 2 elements are the so-called Alkaine Earth metals. A link is provided to the Wikipedia post on the periodic table. Bookmark this one, kids! Each element on the table is a hyperlink to the Wikipedia post on that element. Even the Group numbers are hyperlinks to the post on that Group! It just doesn't get any better that that.
The expected answer is element 115, Ununpentium, if that has been discovered. Among stable elements, the answer would be bismuth.
Sulfur (S)
Sodium is an element itself, it has no elements inside.
The element with 2 more protons than oxygen is sulfur. Oxygen has 8 protons, while sulfur has 16 protons.
calciumThe element sulfur's atomic number is 16, so there are 16 protons in its nucleus. The element bromine's atomic number is 35, and there are 35 protons it its nucleus. This means the element will have an atomic number between 16 and 35. Since the question asked which Group 2 element fits in that window, we can go to the Periodic Table and look down the column of Group 2 elements and find that calcium is the element so described. It has the atomic number 20, and that means 20 protons in its nucleus.Remember that the Groups on the periodic table of elements are the vertical columns, and they range from Group 1 to Group 18. Group 2 elements are the so-called Alkaine Earth metals. A link is provided to the Wikipedia post on the periodic table. Bookmark this one, kids! Each element on the table is a hyperlink to the Wikipedia post on that element. Even the Group numbers are hyperlinks to the post on that Group! It just doesn't get any better that that.
Atomic number is the number of protons. Atomic mass is (mostly) the sum of the masses of the protons and neutrons (more or less).