# What is the atomic mass for 97?

## What is the atomic mass for 97?

Berkelium
Berkelium is a transuranic radioactive chemical element with the symbol Bk and atomic number 97.

## What is the atomic mass for bromine?

79.904 u
Bromine/Atomic mass

What is the atomic mass of bromine 79?

79.904 amu
Bromine has two naturally occurring isotopes (Br-79 and Br-81) and an atomic mass of 79.904 amu.

### What is the atomic mass of bromine 80?

79.91853
Bromide ion Br-80

PubChem CID 15605487
Structure Find Similar Structures
Molecular Formula Br-
Synonyms Bromide ion Br-80 UNII-KQ7PNA8VW2 KQ7PNA8VW2 Bromide Br-80 Bromide, Br-80 More…
Molecular Weight 79.91853

### What is 97 on the periodic table?

berkelium
Many compounds of element 97, berkelium, have been prepared.

berkelium (Bk), synthetic chemical element of the actinoid series of the periodic table, atomic number 97. Not occurring in nature, berkelium (as the isotope berkelium-243) was discovered in December 1949 by American chemists Stanley G.

#### How do you find the atomic mass of bromine 81?

To get f.a., we simply need to divide the given percent abundance by 100. Solving for the mass of Br-81: The mass of bromine-81 is 80.9 amu.

#### How do you calculate atomic weight?

The atomic weight of any atom can be found by multiplying the abundance of an isotope of an element by the atomic mass of the element and then adding the results together. This equation can be used with elements with two or more isotopes: Carbon-12: 0.9889 x 12.0000 = 11.8668.

What is the mass of bromine 81?

80.9163 amu
Bromine has two naturally occurring isotopes (Br-79 and Br-81) and an atomic mass of 79.904 amu. The mass of Br-81 is 80.9163 amu, and its natural abundance is 49.31%.

## What is the mass number of an atom of berkelium that has 97 protons 97 electrons and 150 neutrons?

Data Zone

Classification: Berkelium is an actinide metal
Protons: 97
Neutrons in most abundant isotope: 150
Electron shells: 2,8,18,32,27,8,2
Electron configuration: [Rn] 5f9 7s2

## How many valence electrons does element 97 have?

Berkelium Atomic and Orbital Properties

Atomic Number 97
Electron Configuration [Rn] 5f9 7s2
Valence Electrons 5f9 7s2
Oxidation State 3;4
Atomic Term Symbol (Quantum Numbers) 6H15/2

Who discovered element 97?

Many compounds of element 97, berkelium, have been prepared….

Discovery date 1949
Discovered by Stanley Thompson, Albert Ghiorso, and Glenn Seaborg
Origin of the name Berkelium was named after the town Berkeley, California, where it was first made.
Allotropes

### What is the atomic mass of 5069 atoms of bromine?

The other major isotope of bromine has an atomic mass of 80.92amu and a relative abundance of 49.31%. The average atomic mass of Br is 79.91 u. There are two ways to solve this problem. Let’s assume we have 10 000 atoms of Br. Then 5069 atoms will have mass 78.92 u, and 4931 atoms will have mass 80.92 u.

### What is the chemical symbol for bromine?

The chemical symbol for Bromine is Br. Neutron Number and Mass Number of Bromine Mass numbers of typical isotopes of Bromine are 79; 81. The total number of neutrons in the nucleus of an atom is called the neutron number of the atom and is given the symbol N. Neutron number plus atomic number equals atomic mass number: N+Z=A.

What are typical isotopes of bromine?

Isotopes are nuclides that have the same atomic number and are therefore the same element, but differ in the number of neutrons. Mass numbers of typical isotopes of Bromine are 79; 81. Atomic mass of Bromine is 79.904 u. The atomic mass is the mass of an atom.

#### What is the average atomic mass of 35 BR 79?

Therefore, Contribution of 35 Br 79 to atomic mass = (79 × 49.7)/100 Isotope of bromine with atomic mass 81 u = 50.3% Hence, average atomic mass of the bromine atom = 39.26 + 40.64 u = 79.9u