it must be 12.
Chromium is the element in period 4 and group 6.
It is indium(In) which is in 5th period in group IIIA (or group 13).
Iodine is found in period 5 of the periodic table. It is a nonmetal element with atomic number 53 and is located in group 17, also known as the halogens.
It tells you the number of cations in the outer energy level of the element's atomic mass
The Element Sulfur. 16. S. Sulfur. 32.065. Atomic Number: 16. Atomic Weight: 32.065. Melting Point: 388.36 K (115.21°C or 239.38°F)The number is 16
The atomic number of the Periodic Table element Period is 92.
The element with the lowest atomic number in period 3 is sodium (Na) with an atomic number of 11.
The fifth period transition element with the greatest atomic number is tantalum (element 73).
When going left to right across a period, the atomic number of element increases.
you mean atomic number and it is 28
copper
The atomic number of the element with the symbol Li, located in period 3 on the periodic table, is 3.
From atomic number 55 to 86
Calcium is a non metal element. Atomic number of it is 20.
Rhodium is placed in the same period as ruthenium but has a higher atomic number than it.
Increasing atomic number by 1
For elements it's the atomic number not the "Period Number." This number tells you how many protons a single atom of that element has in its nucleus. The "period number" is a dimensionless quantity used in fluid dynamics.