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Chlorine Atomic No, is 17.

This means it is in position No. 17 in Periodic Table.

It has 17 protons

It has 17 electrons.

NB Do NOT confuse with Atomic Mass of Chlorine.

Chlorine has two common isotopes.

One isotope has an Atomic Mass of 35 . That is 17 protons and 18 neutrons).

The other isotope has an atomic mass of 37. That is 17 protons and 20 neutrons).

For both isotopes the number of protons and electrons remains the same. An isotope is a different number of neutrons.

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lenpollock

Lvl 17
3mo ago

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