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No such substance as 'MgOH2'.

If you mean magnesium hydroxide, then its formula is 'Mg(OH)2'. Note the use of brackets .

Strong or Weak ???? It is a poorly soluble alkali.

NB As you have given the formula, it means there is only ONE oxygen and TWO hydrogens. The brackets indicate that there are TWO hydroxide anions.

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lenpollock

Lvl 17
5mo ago

What else can I help you with?