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The speed of a comet traveling around causes a tail trailing behind it.
The magnetic quantum number <span>is one of four quantum numbers which are assigned to each
electron in an atom to describe that electron's state.
</span>The magnetic quantum number (ml) can be any integer between -l<span> and +</span>l.
<span>Magnetic quantum
number specify orientation of electrons in magnetic field and number of electron states (orbitals) in
subshells.
<span>Magnetic quantum number (ml) specifies the
orientation in space of an orbital of a given energy and shape . Magnetic
quantum number divides the subshell into individual orbitals which hold
the electrons, there are 2l+1 orbitals in each subshell.
</span></span>For 2s orbital electrons:
Principal quantum n = 2.
<span>Angular quantum number l = 0.
</span>Magnetic quantum number ml = 0.
Silicon will receive 4 electrons to complete the octet rule and bromine has to gain 7 to complete its octet rule. This is because silicon has 14 electrons and 4 valence while bromine has 35 electrons and 1 valence.
<u>Answer:</u>
d. Transition metal
<u></u>
<u>Explanation:</u>
A transition metal is an element which has an atom or forms an ion with a partially-filled d-subshell.
As we can see from the electronic configuration of Copper 2+ ion, Cu²⁺:
,
copper forms an ion with an incomplete d-subshell that contains 9 electrons; therefore copper is a transition metal.
• Option a. is wrong because copper is not a metalloid. Metalloids have characteristics of both metals and non-metals; copper only has metallic properties.
• Option b. is wrong because 'alkaline earth metals' are the elements in Group 2 of the periodic table; copper is in Group 11.
• Option c. is wrong because 'alkali metals' are in Group 1 of the periodic table.