Hydrogen Forms Metallic (Interstitial) Hydrides with the D and F

question 47

Multiple Choice

Hydrogen forms metallic (interstitial) hydrides with the d and f transition elements. Which of the following statements is correct?

• A)These substances have distinct stoichiometric formulas like ionic hydrides.
• B)Hydrogen forms bonds with the metals by donating its electron to the valence band of the metal.
• C)Hydrogen molecules and atoms occupy holes within the crystal structure of the metal.
• D)These substances are useful catalysts.
• E)These hydrides are stabilized by hydrogen bonding forces.

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Definitions:

Indirect Method

A cash flow statement technique that starts with net income and adjusts for changes in balance sheet accounts to arrive at operating cash flow.

Capital Expenditures

Funds used by a company to acquire, upgrade, and maintain physical assets such as property, industrial buildings, or equipment.

Operating Expenses

The ongoing costs for running a business that are not directly tied to the production of goods or services, such as rent, utilities, and salaries.

Indirect Method

A way of preparing the cash flow statement where net income is adjusted for non-cash transactions, deferrals, and accruals to calculate cash flow from operating activities.