The half-life isn't specified for an element, but for an isotope. Check the Wikipedia article titled "Isotopes of rubidium" for more details.Rubidium-87 occurs naturally; it has a half-life of 4.92×1010 years.
They are not related!
it related
i think they are related
thay weren't related
They are not related by blood; they become husband and wife.
They are the elements in the first column of the periodic table: lithium (Li), sodium (Na), potassium (K), rubidium (Rb), cesium (Cs), and francium (Fr).See the Related Questions to the left for more information about the alkali metals and their properties.
By relatives, I am assuming that you mean elements in the same family. The metals that are related to sodium are lithium, potassium, rubidium, caesium and francium
Have a look at the wikipedia article about Rubidium it will answer your question. Click on related links below.
No, it is not a conjunction. It is a noun related to the verb to add.
No, it is not a conjunction. It is an adjective related to the noun glory.
No, it is not a conjunction. It is an adverb related to being considerate or contemplative.
All the elements in the first column of the periodic table have 1 valence electron.They include: lithium (Li), sodium (Na), postassium (K), rubidium (Rb),cesium (Cs), and Francium (Fr).See the Related Questions for more information.
No, the word I (first person pronoun) cannot be a conjunction. A conjunction connects related words, phrases, and clauses.
No, it is not a conjunction. The word work is a noun with several related meanings, or a verb.
No, it is not a conjunction. The word wonder can be a noun, or a related verb meaning to ponder, consider, or question.
85.4678 g/mol, please see related link
A correlative conjunction