Be is in the s block too. Li has one less proton than Be.
Protons are part of the nucleus, so they have less mass than the nucleus (except in the specific case of hydrogen, where the nucleus is a single proton so they have the same mass).Electrons are much less massive than protons. It would take 1836 electrons to equal the mass of one proton.Neutrons are very slightly more massive than protons, by just about the mass of an electron. They're close enough that they're generally treated as having essentially the same mass.
Less.
It is the atom of deuterium. Its nucleus is composed of a proton and one neutron. The atom has one electron that is orbiting around the nucleus.
Tin's atomic number is 50. Thus, it has 50 protons per atom. The atom with 51 protons is antimony.
In charge, spin, and strangeness; they are exactly equal. In mass, it would take about 1836 electrons to equal a proton.
maybe proton
Chlorine, with the atomic number 17 has one less proton than argon, with the atomic number 18. The atomic number is the number of protons.
Hafnium (Hf) has one less proton than Zirconium (Zr). Zirconium has 40 protons, while Hafnium has 39 protons.
A proton has slightly less mass than a neutron.
The element with one less proton than sodium is magnesium. Sodium has 11 protons, while magnesium has 12.
Niobium (Nb) has one less proton than Zirconium (Zr) in the periodic table. Zirconium has 40 protons while Niobium has 41 protons.
Actually every proton has different size in different nucleus. But in general, Proton, 1x10-15 m or "a diameter of approximately one-millionth of a nanometer". The electron, the diameter is less than 1x10-18 m. Likewise, The diameter of an electron is less than 1/1000 the diameter of a proton.
Thallium (Tl) has one more proton then mercury (Hg), mercury has 79 protons, Thallium has 80 protons.
Platinum(Pt) has 78 protons. Gold(Au) has 79 protons
A noble gas is an element found in group 18 of the periodic table, characterized by having a full outer electron shell. Therefore, one less proton than a noble gas would place the element in group 17 of the periodic table, known as the halogens. Halogens have one less proton than noble gases and are highly reactive nonmetals.
The element with properties similar to both metals and nonmetals and one less proton than carbon is boron. Boron is a metalloid that displays characteristics of both metals and nonmetals due to its position in the periodic table.
Platinum