An atom of the same element that differs by the number of neutronsa) anionsb) cationsc) element d) isotope e) atom

Explanation:

All atoms of a same element have equal number of protons (atomic number) but may differ in the number of neutrons.

The atoms that differ in the number of neutrons are named isotopes.

For example: carbon-12 and carbon-13 are diferent isotopes of the same element, carbon. They have the same number of protons (6, which is the atomic number of carbon). On the other hand, while carbon-12 has 6 neutrons, carbon-13  has 7 neutrons.

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one negative thing it that it can kill water animals. another negative thing is it can cause the destruction of ecosystem. one way water pollution can be reduced is to conserve energy.

un recipient conține 6,4 moli de gaz. gazul hidrogen reprezintă 25% din totalul kilometrilor din container. în cazul în care presiunea totală este de 1.24 atm ceea ce este