Unless otherwise instructed, you may use the periodic table in the Chemistry: Problems and Solutions book for this question. Which of these sets of elements has similar properties?

oxygen, nitrogen, carbon

strontium, magnesium, calcium, beryllium

hydrogen, helium, neon

chromium, magnesium, iron, cobalt

One of the cell membrane's functions is to protect the cell keep wastes in the cell create new cells keep light out of the cell

13. a covalent bond between two atoms is likely to be polar if: a. one of the atoms is much more electronegative than the other. b. the two atoms are equally electronegative. c. the two atoms are of the same element. d. the bond is part of a tetrahedrally shaped molecule. e. one atom is an anion.

What amount of heat is exchanged when 106.2 grams of substance y goes from a liquid at 35 degrees celsius to a solid at the same temperature? melting point of substance y = 35 degrees c; δhvaporization = 3.67 j/mol; δhfusion = 3.30 j/mol. mwsubstance y = 28.22 g/mol. −12.4 j −3.51 x 102 j 1.24 x 101 j 351 j