Question

See page 6 Chemists represent substances in a variety of ways, and they need to be able to easily shift back and forth between these symbolic representatio and names of the substances. They also need to be able to determine from any of these representations whether a pure substance is an element a compound. 1st attempt See See Periodic Table (1 point) Part 1 This picture is a visual representation of helium. Write the chemical formula for helium

Answer 1

Helium is the element with atomic number 2 and chemical formula He

Helium is having two electrons with electronic configuration 1s2 .Helium is having one proton and one neutron.