Generally speaking, what kind of trend does first ionization energy follow across a period from left to right?

Which ion of nitrogen is the largest?

Which of the following atoms is the largest?

Which of these elements is the most electronegative?

Which of the following usually decreases across a period from left to right?

Which of the following values will decrease as you move left to right in a period of the periodic table?

How many valence electrons does the element oxygen have?

Which of the following is the most electronegative element?

Which of these elements has the greatest ionization energy?

Which of the ground state atoms from the listed elements has five electrons in the outer electron shell?