Which part of the atom takes up the most space

Why is the second ionization energy greater than the first ionization energy? a. it is more difficult to remove a second electron from an atom b. the size of atoms increases down a group c. the size of anions decreases across a period d.

What mass of ammonium sulfate ((NH4) 2SO4 132.15 g/mol) is required to produce 282 mL of a 2.50M solution of ammonium sulfate?

How man total atoms are found in 2HCO3?

How many atoms of iron are there in 1 moles of wolframite FeWO4?

What are ions? a. atoms with equal numbers of protons and electrons b. electrically charged atoms c. neutral atoms d. small molecules with covalent bonds

What was henri becquerel studying when he accidentally discovered radioactivity?

A substance which is made up of identical atoms is a (n): chemical element compound alloy

Which answer choice correctly explains how the structure of ionic compounds differs from covalent compounds? Ionic compounds are made of a network of ions while covalent compounds are made of a network of molecules.

If 3.0 mol of NaOH is dissolved in. 50 L of water, what is the molarity? Select one

How many electrons in an atom can have a quantum number of n = 2?