What is the mass no. of boron?

In your case, the name boron-11 is used to designate an isotope of boron that has a mass number equal to 11 . Since mass number is defined as the sum of the number of protons and the number of neutrons the atom has in its nucleus, it follows that you can write. A=Z+no. of neutrons , where. read more

Notice that boron, "B", which is located in period 2, group 13 of the periodic table, has an atomic number equal to 5. This means that any atom that has 5 protons in its nucleus will be a boron atom. So, the mass number of this boron isotope is equal to 11, and the atomic number to 5. read more

Boron compounds play a strengthening role in the cell walls of all plants, making boron a necessary plant nutrient. There is no consensus on whether boron is an essential nutrient for mammals, including humans, although there is some evidence it supports bone health. read more