Beryllium. Element number 4.
'h' doesn't mean anything in the Periodic Table. 'H' (Capital Letter) is hydrogen 'He' (Capital Letter followed by a lower case letter) is Helium. Careful with your use of capital/lower case letters. Follow as shown in the Periodic Table.
Argon is what Ar stands for on the Periodic Table of elements.
"H" stands for Hydrogen on the periodic table.
Americanium
beryllium
N stands for Nitrogen on the periodic table.
"Br" stands for Bromine in the periodic table.
It stands for Rubidium
Sr stands for strontium on the periodic table of elements.
Mo stands for Molybednium in the periodic table. It is placed in group-6.
N/A stands for Not Applicable.On the Periodic Table of elements, Na stands for Sodium.
B stands for Boron in the periodic table. They are placed in group-13.