notfromhere notfromhere

06-10-2022
Chemistry

Answered

For the element He: show the
Number of valence electrons & number of core electrons

Answer :

Other Questions

covalent bonds share electrons to get the electron configuration of a -

50pts Evaluate the following statements that explain the difference between a nonpolar covalent bond, a polar covalent bond, and an ionic bond. Identify which t

Calculate the mass in grams for 7 atoms of manganese (Mn) with atomic number 25 and mass number 55.

Complete the following calculation with the correct number of significant figures. 305+954+786+3.14159=

Select the atomic models that belong to the same element.

How would you describe a particle of alpha radiation? A. an electron ejected from a neutron B. a helium atom with no neutrons C. a helium nucleus with no electr

what evidence is there from your results that the characteristic color observed for each test metal is due to the metallic element in each case? describe an add

Antimony, an element on the periodic table that is a soft, toxic "metal" that was used throughout time with terrible consequences, one medical use similar to Me

Element Sorenium has 3 natural isotopes and an average mass of 19.668 amu. What is most likely to be the most abundant isotope?

Three compounds containing potassium and oxygen are compared. Analysis shows that for each 1. 00 g of o, the compounds have 1. 22 g, 2. 44 g, and 4. 89 g of k,