Atomic disguise makes helium look like hydrogen. ... A helium atom consists of a nucleus containing two positively charged protons and two neutrons, encircled by two orbiting electrons which carry a negative charge. A hydrogen atom has just one proton and one electron
Number 4 I think
the atomic mass is 11 because the mass is the sum of protons and neutrons
Answer:
a
Explanation:
water is only able to desolve two substances , salt , sugar,