I need help with my chesmitry problems if you can help it would be great i’m not really good at it

Which of these best describes an ionic bond?

In pea plants, the allele for tallness (t) is dominant to the allele for shortness (t). in the cross between a tall pea plant and a short pea plant shown below, what is the probability that the resulting offspring will be tall? whats the percent

Flourine is found to undergo 10% radioactivity decay in 366 minutes determine its halflife