boron
"Its Boron you Moron"- Mr. D
The element nickel (Ni) has an atomic radius of 124 picometers.
Platinum is a metal element. Atomic mass of it is 195.08.
Atoms of the element cesium (also caesium), symbol Cs, element number 55.
Gallium has an atomic radius of 135 picometers.
The atomic radius of copper is about 128 picometers (pm).
The element nickel (Ni) has an atomic radius of 124 picometers.
Platinum is a metal element. Atomic mass of it is 195.08.
First, the value of the atomic radius is not fixed, but depends on the definition you're using. Second, no element has an atomic radius as large as 152 nm. All atomic radii are about 1000 times smaller than that. Finally, assuming that you meant to say 152 pm, lithium has a metallic radus of 152 pm, oxygen has a van der Waals radius of 152 pm, and cobalt has a calculated atomic radius of 152 pm.
Atoms of the element cesium (also caesium), symbol Cs, element number 55.
According to Webelements, the estimated density of astatine is 6400 kg/m3.
Generally, any element with a lower atomic number.
Manganese is a meta element. Atomic mass of it is 55.
The element krypton's atomic radius is 189 pm. This is a measurement of its atom sizes or the distance between the electron cloud and the nucleus.
Gallium has an atomic radius of 135 picometers.
The atomic radius of copper is about 128 picometers (pm).
Samarium has a calculated atomic radius of 238 pm.
The answer choices for this question wasn't provided. Oxygen has the smallest atomic radius. The higher the electronegativity in an element makes the atomic radius smaller.