Which chemist received both the Nobel Prize in Physics and in Chemistry for work in understanding radioactivity and the discovery of polonium? Question 17 options: A) Ernest Rutherford B) Pierre Curie C) Henri Becquerel D) Marie Curie

Marie Curie

Explanation:

Physics in 1903

Chemistry in 1911

Wow

https://www.nobelprize.org/prizes/physics/1903/marie-curie/biographical/

explanation: it gains negative electrons, therefore becoming negatively charged. as charge cannot be created, nor destroyed, only transferred, this leaves the wool positive. now that they have opposite charges, the two items attract.

alkaline metals are lithium, sodium, rubidium, potassium, cesium and francium.

alkali metals have electronegativity from 0.7 to 1, lowest in periodic table of elements, which means that alkali metals (i group in periodic table) has positive oxidation number in compounds.

electronegativity is a chemical property that describes the tendency of an atom to attract a shared pair of electrons towards itself.

alkaline metals (far left in main group) have lowest ionizations energy and easy remove valence electrons,

for example, potassium is the alkali metal and has a single valence electron in the outer electron shell.

electron configuration of potassium is: ₁₉k 1s²2s²2p⁶3s²3p⁶4s¹.

they can not exist alone in nature, because they are very reactive.