Calcium
An atom's atomic number tells us how many protons it has. If we reference a periodic table, we see that calcium's atomic number is 20. Thus, calcium has 20 protons.
The atomic number is the number of protons in the element. For example calcium has 20 protons, so that means it has an atomic number of 20. You can find the element's number on the periodic table; its usually the number on top of the element's symbol
Ca stands for calcium on the periodic table for the first 2 letters of calcium.
An atom's atomic number tells us its number of protons. Referencing a periodic table we see that calcium's atomic number is 20. Thus, it has 20 protons.
The element with mass number 40 and 21 neutrons is Calcium (Ca), which belongs to Group 2 and Period 4 of the periodic table. It has 20 protons (40 - 21 = 20) in its nucleus, making it the 20th element in the periodic table.
An atom's atomic number tells us how many protons it has. If we reference a periodic table, we see that calcium's atomic number is 20. Thus, calcium has 20 protons.
The atomic number is the number of protons in the element. For example calcium has 20 protons, so that means it has an atomic number of 20. You can find the element's number on the periodic table; its usually the number on top of the element's symbol
Ca stands for calcium on the periodic table for the first 2 letters of calcium.
There are 20 protons in a calcium atom. You can find the number of atoms in any element by looking at the atomic number which is in the top right corner of the element's box on the periodic table. e.g. Ca 20 40.078
The chemical element with 20 protons and 20 neutrons is Calcium(Ca). The number of protons is equal to the number of electrons, and the number of electrons is equal to the atomic number.
Calcium is an alkaline element, number 20 on your periodic table.
It is based on number of protons. Consider an element has 20 protons.Its atomic number is twenty.
Argon, atomic number 18, since it is between chlorine and potassium on the Periodic Table of Elements.
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.
An atom's atomic number tells us its number of protons. Referencing a periodic table we see that calcium's atomic number is 20. Thus, it has 20 protons.
The element with mass number 40 and 21 neutrons is Calcium (Ca), which belongs to Group 2 and Period 4 of the periodic table. It has 20 protons (40 - 21 = 20) in its nucleus, making it the 20th element in the periodic table.
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.