The Mathematician Johann Jakob Balmer Found That the Formula 1/λ

question 20

Multiple Choice

The mathematician Johann Jakob Balmer found that the formula 1/λ = R (1/n_f² − 1/n_i²) works for the hydrogen emission lines in the visible range, with what value of n_f?

• A) 1
• B) 2
• C) 3
• D) 4
• E) 5

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Definitions:

Social Referencing

Using another person’s reaction to a situation to form one’s own response.

Indiscriminate Attachment

A phase in early child development where infants show no preference for specific caregivers and seek comfort from any adult.

Contact Comfort

The emotional and physical reassurance gained through touch, especially significant in bonding processes between parents and infants.

Home-Reared Children

Children who are educated and raised in a family home environment, as opposed to an institutional setting like a daycare or school.