Need help on any pls beo

For ai it's atomic number is 13 and it's mass number is 27 how many neutrons does it have

Which element is the least metallic between cadmium, silver, zinc, or iron?

Read the claim. breakfast is an important meal. it jump starts the body’s process of using calories to break down food. appetite can decrease with age, but going too long without eating causes metabolism to slow down. current research shows that incorporating legumes such as lentils and chickpeas into meals boosts metabolism for twenty-four hours. who might benefit from this claim? people who have a fast metabolism stores that sell exercise equipment people who take vitamin supplements grocery stores that sell legumes