For each factor (on the left list) u can choose one of the three options (on the right). U can choose each option as many times as u like
There are different factor which help in stabilise the species
1) inductive effect is the dragging of electron by the electronegative atom toward itself and it is distance phenomenon greater the distance lesser will be effect of inductive effect
2) hybridization: greater the s character more electronegative will be orbital and more stabilised will be the negative charge
3) greater the size more the space for negative charge to move about so it will be more stabilised
4)resonance if the negative charge is able to get delocalised then it will be more stable
5) if electronegative atom bear negative it will be more stabilised
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