What is the composition of the atoms of elements 37 and 74?

By the number, we find an element in the periodic table and describe the composition of its atom. The ordinal number of an element is equal to the number of electrons and protons in the nucleus. Accordingly, the nuclear charge is also numerically equal to the element number, with the “+” sign.

We determine the mass number of the found element according to the table. Numerically, this value is equal to the sum of protons and neutrons, which means that you can calculate the number of neutrons. To do this, it is enough to subtract the serial number from the mass number.

Element 37 (Rubidium)

Serial number: 37

Number of electrons: 37

Proton count: 37

Core charge: + 37

Mass # = 85

Number of neutrons: 48

Element 74 (Tungsten)

Index number: 74

Number of electrons: 74

Protons = 74

Core Charge: +74

Mass # = 184

Number of neutrons: 110