Chemistry

posted by Mary

1) How does the atomic radius change from left to right across a period in the periodic table?
A) It tends to decrease***
B)It tends to increase
C) It first increases, then decreases
D) It first decreases, then increases

2) What is the charge of a cation?
A) A positive charge***
B) No charge
C) A negative charge
D) The charge depends on the size of the nucleus

3) The metals in groups 1A, 2A, and 3A ____.
A) gain electrons when they form ions
B) all form ions with a negative charge
C) all have ions with a 1+ charge
D) lose electrons when they form ions***

4) Why is the second ionization energy greater than the first ionization energy?
A) It is more difficult to remove a second electron from an atom***
B) The size of atoms increases down a group
C) The size of anions decreases across a period
D) The nuclear attraction from protons in the nucleus decreases

5) Which is the element with the highest electronegativity value?
A) Cesium
B) helium
C) calcium
D) fluroine***

6) What is the energy required to remove an electron from an atom in the gaseous state called?
A) nuclear energy
B) ionization energy***
C) shielding energy
D) electronegative energy

7) Which of the following decreases with increasing atomic number in Group 2A?
A) shielding effect
B) ionic size
C) Ionization energy***
D) number of electrons

  1. Syn

    Thanks! 100%!

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