Please supply the symbol for the element that is the Metalloid with the smallest atomic mass.

Answer 1

Atomic mass takes the proton and neutrons because electrons only contribute in a very small way when it comes to atomic mass and mass number.

Hydrogen has an atomic mass number of 1. When you look at this element it has 1 major origin that contributed to it's mass and especially in it's elemental form it will have the same amount of electrons which is 1. This makes it's atomic weight 1.01. It's mass number is 1 because it has 1 proton, 1 electron and no neutron. Hydrogen is the smallest, and it's symbol is H. In ionic form it takes on an H+. Second in the list of the periodic table with small mass is He or helium,. But the smallest is hydrogen with it's atomic symbol: H. You can see this on any periodic table.

Answer 2

Understand how to read the periodic table. Locate and highlight the metalloids and go from there.