How many li atoms are contained in 97.9 g of li

The number of atoms in given mass of lithium element is

Explanation:

To calculate the number of moles, we use the equation:

Mass of lithium = 97.9 g

Molar mass of lithium = 6.94 g/mol

Putting values in above equation, we get:

According to mole concept:

1 mole of an element contains number of atoms

So, 14.12 moles of lithium will contain = number of atoms.

Hence, the number of atoms in given mass of lithium element is

the number of protons in the nucleus of a given element. has slight luster and conducts electricity at high temperatures like metal.but like a nonmetal,boron is brittle and does not conduct electricity well at low temperatures. in graphite, carbon is a soft,brittle solid.it is reflective,ductile,or malleable.