what is the number of electrons protons and neutrons for the elements of Sodium and Chromium? What element has 26 electrons? and what are the protons and neutrons for that element?

Mass of chromium is equal to 11% of the total mass. Therefore the mass of chromium = 0.11×9.43g=1.033g

N(t)=Nо(1/2)^t/1/2tN(t)-remaining amount of substanceN(о)-Initial amount of the substanceN(t)=1/2*133mCi^84/1/2*28N(t)=133*1/2^6N(t)=133*1/64N(t)=133/64N(t)=2,078125 ~~ 2,08

Element A

Molar mass of chromium = 51.9961g/mol5.2/51.9961= 0.1Molar mass of oxygen = 15.9995.6/15.999= 0.35= Cr2O7

The d-block elements are called transition metals and have valence electrons in d orbitals. The inner transition elements are those who have their last 3 shells incompletely filled. The f...

The ionic charge tells the number of electrons gained or lost. Since electrons are negative, adding an electron will make the ion have a negative charge, and losing electrons will...

p=m/V V=m/p = 32000 / 7.14 = 4481.79272 cm3V= a3 a= V^(1/3)= 4481.79272^(1/3) = 16.4873398 cm

Li+ F-

Symbol Representing an Atom.AzXc Where X represents the symbol for the element;A represent the mass number i,e;(neutrons+proton). z represents the atomic number ( i,e the number of protons) ;C repesent...

Element A is a Chlorine, he has 7 electrons on 3 layer, and 17 protons. Chlorine is a chemical element with the symbol Cl and atomic number 17. Mg +...