Select two statements that describe how elements in the same group are similar to each other.

Remember to select two answers

A: Elements in the same group share the same number of valence electrons.

B: Elements in the same group share the same number of orbitals in their structure.

C: Elements in the same group share the same number of total electrons.

D: Elements in the same group share the same reactive properties.

A: Elements in the same group share the same number of valence electrons.

D: Elements in the same group share the same reactive properties.

Explanation:

A periodic group is simply the arrangement of elements vertically on the periodic table.

There are about 8 main groups of elements on the periodic table.

the best answer is d because the strong cohesion is caused by the ability of water molecules to undergo hydrogen bonding.

a is incorrect because when water solidifies, it becomes   ice, which expands and occupies a bigger volume for the same mass of water in its liquid state.

b is incorrect because water has high surface tension. besides bonding to itself it hydrogen bonds to other molecules at the top decreasing possibility for breaking of attractive forces.

c is incorrect because the water molecule has oxygen which is highly electronegative and so pulls the electron pair towards itself creating a dipole moment, making the molecule polar.

e is incorrect because water has strong adhesion, ability to stick to other molecules such as glass because of this molecules having stronger hydrogen bonding than water.