Question

an element forms an oxide with formula E2O3 state the valency of each write the formula of its chloride sulphate phosphate bromide

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Answer 1

Answer:

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Thallium-203

Thallium-203 is the stable isotope of thallium with relative atomic mass 202.9723.

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4.3Related Element.

Element Name Thallium

Element Symbol Tl

Atomic Number 81

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