Does the amount of Zakat paid from certificate profits, at a rate of 10%, fulfill the required Zakat for a divorced woman who single-handedly supports four children, knowing that her ex-husband refuses to provide for them and the decreed alimony is insufficient, and she spends on them from her mother's inheritance and her father's pension?

Zakat (definition) becomes obligatory on money under two conditions: that it reaches the nisab (definition) (which is equivalent to 85 grams of gold), and that a full Hijri year passes over it. If both conditions are met, the zakat amount is a quarter of a tenth (2.5%), and it is to be given to the zakat recipients. However, if the money does not reach the nisab or a full year has not passed over it, then there is no zakat due on it.