Question

what do you mean by nuclear pull​

Answer 1

Explanation:

Number of protons. The protons pull on the outer electrons; the more protons, the more pull exerted by the nucleus. Electron repulsion. Size of e-cloud; the more electrons in cloud, the more they are pushed away from each other, making a bigger cloud.

Answer 2

The nucleus of an atom is composed of positively charged protons and electrically neutral charged neutrons. Thus, a nucleus is positively charged and wields a pull on the negatively charged electrons orbiting it and this is known as the 'nuclear pull'.

• An electron orbiting a nucleus is electrically attracted to the nucleus which is why it is always being pulled closer. But the electron similarly has kinetic energy, which serves to send the electron drifting away. For a stable atom, these two forces should be in balance.

• Across a duration, significant nuclear charge increases as electron shielding continue to be constant. This results in the pulling of the electron cloud closer to the nucleus and thus, enhancing the nuclear attraction to the outer-most electron, and is tougher to remove as it requires more energy.

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