Question

Find out the number of elections, protons and neutron
following 40Ca
20​

Answer 1

Answer:

Atomic number= number of proton =39

Atomic number= number of proton =39Number of electrons = Number of proton =39

Atomic number= number of proton =39Number of electrons = Number of proton =39Number of neutrons = mass number - atomic number =89−39=50

Answer 2

Answer:-

• The element is Calcium here.

The symbol given by

$\\ \sf\longmapsto 20^{N^{40}}$

Here

• Atomic mass=40
• Atomic number=20

We know

$\\ \sf\longmapsto No\:of\:protons=Atomic\:Number$

$\therefore\underline{\boxed{\bf No\:of\:Protons=20}}$

Again

$\\ \sf\longmapsto No\:of\:protons=No\:of\:electrons$

$\therefore\underline{\boxed{\bf No\:of\:electrons=20}}$

And

$\\ \sf\longmapsto No\:of\:Neutrons=Atomic\:Mass-No\:of\:Protons$

$\\ \sf\longmapsto 40-20=20$

$\therefore\underline{\boxed{\bf No\:of\:Neutrons=20}}$