It is constant for elements. IT depends on number of protons that atom has.
b. the atomic number is constant. The mass number is not constant because there are isotopes of an element that have the same number of protons but different number of neutrons. Likewise, there are isotopes of the same element with different atomic weights.
Electron (beta minus) decay: the atomic mass remain approx. constant, the atomic number will be greater with 1 Positron (beta plus) and electron capture decay: the atomic mass remain approx. constant, the atomic number decrease with 1 Double beta decay: the atomic mass remain approx. constant, the atomic number will be greater with 2
Yes, all atoms of argon have the same atomic number, which is 18. Atomic number refers to the number of protons in the nucleus of an atom, and for argon, it always remains constant at 18.
Yes
I'm assuming you ask about the situation when isotopes has the same atomic number but different masses; this is normal because the number of neutrons in the isotopes of the same element is variable. But the number of protons (identical to atomic number) remain constant.
R = r0A1/3 Where R is nuclear radius (I'm assuming this is your chosen measure of size), r0 is the constant 1.05fm and A is the nucleon number, or mass number.
The atomic mass is the average of all of the different isotopes of the element present in the sample. Samles taken from aound the worlld for some elements have slightly different isotope ratios and therefore have different atomic masses.
No. Atomic Number is defined as the number of positive protons, and when a ion is formed(irrespective of cation or anion) only negative electrons will be lost or added hence the proton number is constant.
The shield is the inner electronic
An element will always have the same number of protons. The atomic number(Z) is the number of protons. For example, if you told that an element has 8 protons, all you have to do is look at the periodic table for the element that has atomic number 8. In this case it would be Oxygen, with symbol (O).However, they might have different number of electrons and neutrons.When they have an electric charge they are called ions. You can calculate the ion charge with this formula:Ion charge = # of protons - # of electronsWhen they have different number of neutrons they are called isotopes. You can calculate the mass number(A) with this formula:Mass number(A): #of protons + # of neutrons
It is the number of protons in the nucleus of the atom and it determinnes many properties of the atom. The atomic number is also the number of electrons and is a constant for every element
this elemnt has an atomic number that is double the atomic number of silicon?