Which of the following are FALSE about periods on the periodic table. 1.Elements having similar properties are in the same period.
2.Atoms of elements in the same period have the same number of valence electrons.
3.Elements in a period are arranged by increasing number of protons.
4.Each period is given a name such as Alkali Metals or Halogens

Sarah wants to know where in her garden chamomile would grow the best. she thinks chamomile will grow best in the corner of the garden that gets the most sunlight. to test her hypothesis, she decides to plant several groups of chamomile in her garden as an experiment. which of the following variables will sarah need to measure to know which group of plants grew best? a. the location of the plants b. the type of plants c. the height of the plants d. the amount of water she gives the plants

Using data from seismic waves, geologists have learned that earth’s interior is made up of several

What rule is used to determine how many covalent bonds an element can form? a. the number of covalent bonds is equal to six c the number of covalent bonds is equal to five minus the group number plus the group number b. the number of covalent bonds is equal to eight d. none of the above minus the group number select the best answer from the choices provided