It’s chlorine (Cl) having the atomic number 17
<span>b) a positive metal ion and a negative nonmetal ion.
</span>Because generally ions of non-metal elements (such as the halogens) are negatively charged while ions of metal elements (such as the alkali earth metals) are positively charged. The differences in their changes causes strong electrostatic attraction (an ionic bond).
Medium sized - D
Dwarf - C
Neutron Star - A
Supergiant - B
Giant - E
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Answer:
A. The molecular orbital theory of bonding is based on the mixing of atomic orbitals of similar shapes and energies to form molecular orbitals that extend to two or more atoms
Explanation:
When two atoms come close to each other, the waves of their atomic orbitals can interfere constructively or destructively, to form two new molecular orbitals that encompass the whole molecule.
B is wrong. It refers to Lewis structures.
C is wrong. It refers to VSEPR theory.
D is wrong. It refers to ionic bonding.
E. is wrong. It refers to valence bond theory.
Answer:
Explanation:
Here, we want to calculate the final volume
We use the general gas equation here:
P1 is the initial pressure which is 0.850 atm
V1 is the initial volume which is 4.25 L
T1 is the initial temperature which is (23 + 273.15 = 296.15 K)
P2 is the final pressure which is 1.50 atm
V2 is the final volume which is unknown
T2 is the final temperature (11.5 + 273.15 = 284.65 K)
Substituting the values, we have:
