An electron orbital is best defined as a

region around a nucleus that can hold up to two electrons

As you move across a period, the radius of an atom will

decrease as the core charge is increasing

In comparison with strontium, magnesium will have

higher electronegativity and a lower metallic nature

The electron configuration of an ion with its electrons in an excited state is

1s22s22p53s1 (atomic number: 8)

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Electron Subshells and Trends of the Periodic Table

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Answers

1
The maximum number of electrons that can occupy a 5p subshell is
10
6
14
2
2
An electron orbital is best defined as a
region around a nucleus that contains two electrons
region around a nucleus that can hold up to eight electrons
shell in an atom that can hold several pairs of electrons
region around a nucleus that can hold up to two electrons
3
The electron configuration of a bromide ion would be
1s22s22p63s23p63d104s24p4
1s22s22p63s23p63d104s24p6
1s22s22p63s23p63d104s24p5
1s22s22p63s23p63d104s24p65s1
4
The electron configuration of scandium will be
1s22s22p63s23p64s24p2
1s22s22p63s23p63d3
1s22s22p63s23p64s23d1
1s22s22p63s23p64s24d2
5
An element located in Period 3, Group 1 would be
A gas
Chemically inert
A non-metal
Very reactive
6
Which element is found in Period 5, Group 7?
Antimony
Technetium
Iodine
Dubnium
7
As you move across a period, the radius of an atom will
decrease as the core charge is increasing
increase as the atom has more electrons in it
increase as there are more particles in the nucleus
increase as the core charge of the atom is increasing
8
In comparison with strontium, magnesium will have
a lower first ionisation energy and higher electronegativity
a lower first ionisation energy and a larger atomic radius
a smaller atomic radius and a lower electronegativity
higher electronegativity and a lower metallic nature
9
The number of subshells containing electrons in an atom of K will be
8
3
5
6
10
An ion with a charge of positive two, and the same e^- configuration as the chloride ion, is the
sulfide ion
magnesium ion
calcium ion
phosphide ion
11
The electron configuration of an ion with its electrons in an excited state is
1s22s22p53s1 (atomic number: 8)
1s22s22p6 (atomic number: 9)
1s22s22p33s1 (atomic number: 8)
1s22s22p1 (atomic number: 5)

Electron Subshells and Trends of the Periodic Table Flashcards | StudBud