1. Helium is a monoatomic molecule but oxygen is a diatomic molecule, explain. 2- If Chlorine has an atomic number of 17 and a mass number of 35, what will be the correct number of protons, neutrons, and electrons, respectively?
Answers
Answer:
yes, Helium is monoatomic having only one atom, where as oxygen (O2) is diatomic gas.
Explanation:
monoatomic means, single atom. Helium gas has single atom where as oxygen gas is having two atoms of oxygen making oxygen molecule, hence oxygen is diatomic (means having two Atoms).
Atomic number: what is atomic number?
It is nothing but number of protons, which is also equal to the number of electrons.
if chlorine has 17 atomic number, number of protons will be?
17! right?, yes, atomic number gives number of protons, which is also equal to number of electrons, means, electrons are also 17.
17 protons and electrons.
what about neutrons?
well
what is atomic mass?
it is nothing but no. of neutrons plus protons!
now we know that Protons are 17,
35 is atomic mass (Neutrons plus protons).
No. of neutrons = 35-17
No. of neutrons = 18