Chemistry, 07.12.2019 03:31 myamiller558

Which general trends in first ionization energy and electronegativity values are demonstrated by group 15 elements as they are considered in order from top to bottom(1) the first ionization energy decreases and the electronegativity decreases.
(2) the first ionization energy increases and the electronegativity increases.
(3) the first ionization energy decreases and the electronegativity increases.
(4) the first ionization energy increases and the electronegativity decreases.

Answers: 1

Show answers

Answers

Answer from: rosieposie27

(1) The first ionization energy decreases and the electronegativity decreases

Explanation:

When we move from top to bottom in a periodic table the atomic size of elements increases and it becomes easy to remove valence electron from the elements at low energy.Thus decrease in ionisation energy from top to bottom.

Metallic character increases as we move down into a group of a periodic table and metals have low electronegativity than non-metals. So, value of electronegativity decreases from top to bottom.

Answer from: Quest

water molecules stay close to each other through cohesion, the collective action of hydrogen bonds between water molecules. cohesion plants draw water upwards from the root through the stem's transport tubes (xylem) to the leaf. this transport occurs even in large trees and against gravity. transpiration, evaporation of water from plant leaves, creates a tension on water molecules being pulled up from the stem and roots.

water also has high (the attraction of one substance to another) properties because of its polar nature. adhesion of water molecules to plant cell walls counteract gravity while water is transported from roots to leaves.

water exhibits a very high surface tension when compared to other liquids. surface tension is a property of a liquid that holds the surface together and allows it to resist an external force. by capillary action, the water forms concave menisci inside the pores. the high surface tension of water pulls the concavity outwards, generating enough force to lift water from the roots to the leaves of plants.

thus, cohesion, along with adhesion and surface tension creates a capillary action that keeps water molecules interacting and moving through the plants out to the leaf cells.

therefore, option d) is the correct answer.

explanation:

Answer from: Quest

We can’t you if you only tell us that you have to show us what the answers are

Other questions on the subject: Chemistry

Chemistry, 21.06.2019 20:20, mgavyn1052

Calculate the molarity of the solution. 6.02 x 1022 molecules of hci (molecular weight = 36.5 g/mole) in 2.0 liters of water m

Answers: 1

continue

Chemistry, 22.06.2019 06:40, alyons60

Which statement correctly describes metallic bonds? a. they form when certain atoms lose electrons and other atoms gain electrons. b. they involve an attraction between anions and cations. they always involvpoth a metal and a nonmetal. d. they can only form between atoms of the same element. e. they form because electrons can move freely between atoms.

Answers: 3

continue

Chemistry, 22.06.2019 18:30, madmatt873

What volume of a 0.0606 m solution of strontium bromide is needed to obtain 0.340 mol of the compound? question 42 options: a)5.61 l b) 3.4 l c) 600 ml d) 1 l e) 178 ml

Answers: 1

continue

Chemistry, 23.06.2019 02:00, xoxoadara13ox07ck

Now look at the segment of the graph between the two data points marked with black squares. describe how the boiling point and melting point plots behave between these points. be as specific as possible.

Answers: 1

continue

You know the right answer?

Which general trends in first ionization energy and electronegativity values are demonstrated by gro...