Question

what is the mass of an atom with seven protons.seven neutrons,and eight electrons?

Answer 1

Explanation:

It is given that the atom has 7 protons this means that atomic number of the atom is 7.

As we know that atomic mass of an atom is the sum of total number of protons and neutrons present in the atom.

So,       atomic mass of the given atom = no. of protons + no. of neutrons

                                                                = 7 + 7

                                                                 = 14

Thus, we can conclude that the mass of given atom is 14 g/mol.  

Answer 2

The mass of an atom with seven protons, seven neutrons, and eight electrons is 14 g

Given the following information from the question

Number of protons = 7 protons

Number of neutrons = 7 neutrons

Number of electrons = 8 electrons

The mass number of an atom is the sum of its atomic number and neutron number.

Mass number = number of neutron + atomic number

Since the atomic number of an element is equal to the number of protons of such elements, hence;

Mass number = 7 + 7

Mass number = 14 g

Hence the mass of an atom with seven protons, seven neutrons, and eight electrons is 14 g

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