Hydrogen Is Unique Among the Elements Because _

question 76

Multiple Choice

Hydrogen is unique among the elements because _.
1) It has only one valence electron.
2) It is the only element that can emit an atomic spectrum.
3) Its electron is not at all shielded from its nucleus.
4) It is the lightest element.
5) It is the only element to exist at room temperature as a diatomic gas.

• A) 1, 2, 3, 4
• B) 1, 3, 4
• C) 1, 2, 3, 4, 5
• D) 3, 4
• E) 2, 3, 4

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Definitions:

Equipment Depreciation

The allocation of the cost of tangible assets over their useful lives, reflecting the reduction in value due to wear and usage.

Spending Variance

The difference between the budgeted or planned amount of expenses and the actual amount spent.

Supplies Costs

Expenses associated with the purchase of supplies needed for the operation of a business or the production of goods.

Spending Variance

The difference between the actual and budgeted amount of spending, indicating over or under spending.