Why are there only two elements in the first period of the periodic table?

a. there are more than 2 elements in the first period of the periodic table.

b. the first two elements share a unique property the rest of the periodic table does not have.

c. the periods increase by 2 elements each period.

d. the first shell can only hold a maximum of 2 electrons.

What type of solution is formed if 10 g of kclo3 are dissolved in 100g of water at 30

Which describes fat? a: a carbohydrate that produces energy b: a nucleic acid that directs cell function c: a lipid that stores energy d: a protein that speeds up a chemical reaction

The famous scientist galileo galilei did several experiments with sloping planes, which he rolled metal balls down so that he could study motion. by changing the slope, he could study how the speed at which the ball rolled was affected. what was the independent variable in galileo's experiment? a. the speed of the ball b. the slope of the plane c. whether the ball moved d. what the ball was made of